Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
If you drive a Chevrolet Silverado 2500 HD, properly functioning headlights are essential for safe nighttime and low-visibility driving. A correct headlight assembly restores beam pattern, alignment, and sealing to keep water and debris out, while delivering predictable illumination on dark roads.This guide covers the seven best headlight assemblies shortlisted for the Silverado 2500 HD. We focus on fitment, beam pattern and output, durability of the lens and housing, and ease of installation so you can choose the right replacement for your typical driving conditions. Read on for the evaluation criteria and practical considerations before the product reviews.
Top Picks at a Glance
1. Nixon Offroad Projector Headlight Assembly for 2015–2019 Chevrolet Silverado 2500/3500 HD (Pair, Halogen)
| Compatible Vehicle | 2015-2019 Chevy Silverado 2500HD / 3500HD |
|---|---|
| Light Source | Low beam H11, High beam 9005, Turn signal T20 |
| Included Components | Pair of headlights with bulbs |
| Ingress Protection | IP67 waterproof |
| Lens Material | Polycarbonate |
These Nixon Offroad projector headlights replace the factory halogen units on 2015–2019 Silverado 2500HD and 3500HD models and come as a complete left/right pair with all bulbs included. They use projector lenses to concentrate the low and high beam patterns, which typically yields a sharper, more usable cutoff and wider forward coverage compared with a basic reflector lamp. The assemblies are fully sealed with IP67-rated housings, one-way vents, and polycarbonate lenses to resist moisture and road debris, and they include H11 low-beam, 9005 high-beam and T20 turn-signal bulbs so installation lights up immediately. Fitment is vehicle-specific and advertised as bolt-on plug-and-play so no drilling or wiring changes are required for trucks equipped with factory halogen headlights. Limitations to note: these are halogen-based units, so they will not deliver the color temperature or raw lumen output of modern LED conversions, and fitment excludes Silverado 1500 and non-halogen headlight packages. If you want a straightforward, factory-style projector upgrade that improves beam control without changing bulb technology, these are a practical option.
Best for: Buyers who want a direct-fit, factory-style upgrade that improves beam focus and weather resistance without changing to LED technology or modifying wiring.
Less Ideal for: Drivers who prioritize maximum lumen output or a modern LED look should consider LED-specific assemblies or a dedicated conversion instead.
- Vehicle-specific bolt-on design for 2015–2019 Silverado 2500/3500 HD makes installation simple
- Projector lens provides a more focused beam pattern and improved night visibility over basic reflector units
- Includes high/low beam and turn-signal bulbs so the assembly powers up immediately
- IP67-rated sealed housing and one-way vents reduce fogging and moisture ingress
- Polycarbonate lens and ABS-grade housing built to meet factory-quality standards
- Uses halogen bulbs so it will not match the brightness or white tone of LED conversion kits
Verdict: A straightforward, plug-and-play projector replacement that sharpens beam control and resists moisture while keeping factory halogen bulbs.
2. Morimoto LF546 XB Hybrid LED Headlight Assemblies for 2020–2024 Chevrolet Silverado HD (Pair)
| Compatible with Vehicle Type | 2020-2024 Chevrolet Silverado HD 2500, 2020-2024 Chevrolet Silverado HD 3500 |
|---|---|
| Light Source | LED |
| Additional Features | Dustproof, Impact Resistant, Waterproof |
| Voltage | 12 volts_of_direct_current |
| Auto Part Position | Front Left, Front Right |
These Morimoto LF546 XB Hybrid headlights replace the factory units on 2020–2024 Chevrolet Silverado 2500/3500 HD trucks with a direct-fit, plug-and-play assembly. They use dual LED projectors for both low and high beams to produce a wide, bright beam pattern and retain the stock incandescent turn signal bulb to avoid hyper-flash issues. The housings are factory-quality polycarbonate with a smoked look and DOT/SAE/FVMSS108 compliance, and they ship aimed to factory specs while remaining adjustable for lifted trucks. Installation is straightforward: plug into the factory multi-pin connector and add the included DRL power cable to a fuse slot. Compared with Morimoto's top-tier XB line, these Hybrids remove one projector and use a standard turn signal setup to hit a lower price point, so you get much of the performance edge without paying for every premium feature. If you want the strongest possible feature set and fully integrated turn-signal DRLs, the higher-end models offer that, but for performance-focused Silverado HD drivers wanting a major light output upgrade with simple installation, these deliver excellent real-world visibility and durability.
Best for: Buyers who prioritize significantly better nighttime visibility and a straightforward, factory-like installation on a Silverado HD and want a high-performance lighting upgrade without the complexity of premium flagship models.
Less Ideal for: Shoppers seeking the absolute top-tier Morimoto features such as three-projector optics or integrated DRL turn-signal functionality should consider higher-end options instead.
- Direct fit plug-and-play wiring for 2020–2024 Silverado HD reduces installation time and complexity.
- Dual LED projector low and high beams deliver a wide, bright beam pattern for improved night visibility.
- Factory-quality polycarbonate housing with DOT/SAE/FVMSS108 compliance and adjustable aim for lifted trucks.
- Retains stock incandescent turn signal bulbs to avoid hyper-flash and extra wiring.
- Includes DRL power cable and comes aimed to factory specifications out of the box.
- Less feature-rich than Morimoto's top-tier XB models—uses two projectors instead of three and standard turn signals instead of integrated DRL turn signals.
Verdict: If you want a plug-and-play, performance-minded headlight upgrade that dramatically improves night visibility on a 2020–2024 Silverado HD without complex wiring, these Morimoto Hybrids are the practical choice.
3. AUTOFREE Projector Headlight Assembly Pair for 2015–2019 Chevrolet Silverado 2500/3500 HD
| Compatible with Vehicle Type | 2015-2019 Chevy Silverado 2500 HD/ 3500 HD |
|---|---|
| Light Source | Halogen |
| Included Components | LOW BEAM: H11 12V55W; HIGH BEAM: 9005 12V65W; Turn Signal: T20 12V 5W/21W |
| Additional Features | Waterproof |
| Voltage | 12 volts |
These AUTOFREE projector headlight assemblies replace both left and right factory units on 2015–2019 Silverado 2500/3500 HD trucks and use halogen bulbs for high, low, and turn signal functions. They are meant as direct-fit, bolt-on replacements with plug-and-play connectors so installation requires little to no wiring modification for most stock trucks. The lights use H11 low-beam and 9005 high-beam bulbs and claim improved brightness and clearer nighttime visibility through projector optics and polycarbonate lenses. The housings are sealed and rated waterproof to protect against moisture and road spray, and the assemblies list multiple OEM equivalent part numbers for fitment reference. Expect a noticeable styling update compared with worn factory lenses and straightforward swap-in installation, but keep in mind these are halogen-based units so they will not match the output or color temperature of LED conversions and some buyers report variability in long-term durability. They are a practical option when you want factory-style fitment and improved projector beam control without moving to aftermarket LED systems.
Best for: Buyers who prioritize a straightforward, factory-style replacement and improved night visibility without changing the truck to LED lighting will appreciate this pair.
Less Ideal for: If you want maximum brightness, LED color temperature, or a long-term LED upgrade path, consider LED-specific assemblies or a dedicated retrofit kit instead.
- Direct bolt-on, plug-and-play fit for 2015–2019 Silverado 2500/3500 HD reducing install time
- Projector optics with polycarbonate lens for improved beam control and night visibility compared with aged lenses
- Sealed, waterproof housing to resist moisture and road debris
- Includes appropriate halogen bulbs for low beam, high beam, and turn signal so the pair is ready to install
- Uses halogen bulbs so brightness and color temperature lag behind modern LED retrofit options
- Some buyers report inconsistent long-term durability across units
Verdict: A practical, plug-and-play projector headlight pair that restores factory-style fitment and noticeably improves nighttime visibility for 2015–2019 Silverado 2500/3500 HD owners.
4. JSBOYAT Headlight Assembly Pair for 2007–2014 Silverado 1500/2500/3500 Halogen
| Light Source | Halogen |
|---|---|
| Compatible with Vehicle Type | 2007-2013 Silverado 1500; 2007-2014 Silverado 2500/3500 HD (halogen models) |
| Voltage | 28 volts |
| Wattage | 50 watts |
| Lens Material | Polycarbonate |
These JSBOYAT headlight assemblies are a direct-fit replacement for Silverado models with halogen headlights and are designed for straightforward DIY swaps. They use polycarbonate lenses and sealed housings to resist UV yellowing, fogging, and moisture, and match factory mounting points and connectors so installation typically takes under an hour with basic tools. The housings are DOT compliant and the reflector design is tuned for improved beam clarity compared with many aged originals, which helps night visibility. Bulbs are not included so you reuse your existing 9005/H11 bulbs or buy replacements separately. Practical benefits include waterproof IP67 construction and a plug-and-play fit that avoids drilling or wiring changes, making this a low-effort way to refresh faded or cracked factory lights. The main limitations are that these are halogen-style assemblies only and require separate bulbs, and appearance/finish may differ slightly from higher-end OEM or LED retrofit options.
Best for: Buyers who need an affordable, no-fuss replacement to restore light output and weatherproofing on older Silverado halogen headlights and prefer a quick DIY install over expensive upgrades.
Less Ideal for: Drivers seeking factory-style LED or HID conversions, or those who want premium OEM finish and integrated bulbs included should look elsewhere.
- Direct-fit design with factory-style connectors and mounting points for plug-and-play installation
- Sealed polycarbonate lens and IP67-rated construction to resist yellowing, fogging, and moisture
- DOT compliant reflector design that improves night illumination over many aged stock units
- Pair set replaces both left and right assemblies to ensure matched appearance and beam pattern
- Bulbs are not included so you must purchase 9005/H11 bulbs separately
- Limited to halogen setups only and not a LED or HID upgrade option
Verdict: A cost-effective, factory-fit halogen replacement that restores waterproofing and improves night visibility with simple plug-and-play installation.
5. AKKON Chrome Replacement Headlight Pair for 2015–2019 Chevy Silverado 2500HD/3500HD (Halogen)
| Compatible Model Years | 2015-2019 |
|---|---|
| Fit Type | Vehicle Specific Fit |
| Light Source | Low Beam H11 excluded, High Beam 9005 excluded |
| Voltage | 12 volts DC |
| Lens Material | Polycarbonate |
These AKKON headlights are a direct-fit replacement for factory halogen units on 2015–2019 Silverado 2500HD and 3500HD trucks, supplied as a complete left and right assembly. They are built to match factory mounting points and connectors for a straightforward swap when replacing damaged or weathered stock headlights. The chrome housing and clear polycarbonate lens replicate factory appearance while the assemblies are rated waterproof and DOT/SAE compliant for on-road use. They accept the stock low-beam H11 and high-beam 9005 bulb types (bulbs not included), so you reuse your existing bulbs or upgrade separately. Practical benefits include easier installation with no major wiring changes and restored light output and sealing compared with cracked originals. Limitations are that these only fit the halogen-style factory headlight configuration and do not include bulbs or installation instructions, so professional installation is recommended if you want plug-and-play assurance.
Best for: Buyers who prioritize a dependable, factory-style replacement to restore headlights quickly and reliably on their 2015–2019 Silverado 2500HD/3500HD, especially when original halogen assemblies are damaged or leaking.
Less Ideal for: Drivers who need projector or LED-style upgrades, or trucks equipped with non-halogen factory headlight systems should look for a different assembly or conversion kit.
- Vehicle-specific design for 2015–2019 Silverado 2500HD/3500HD ensures direct-fit mounting
- Complete left and right assemblies include full housings for faster replacement
- DOT and SAE compliance for road-legal performance
- Waterproof construction and polycarbonate lens improve durability against moisture and road debris
- Does not include bulbs or printed installation instructions
Verdict: A reliable, factory-style halogen replacement pair that restores fit, sealing, and legal street performance for 2015–2019 Silverado 2500HD/3500HD trucks.
6. DNA MOTORING Chrome Amber Headlight Pair for 2007–2014 Silverado 2500/3500 (Halogen)
| Compatible vehicles | 2007–2013 Silverado 1500; 2007–2014 Silverado 2500/3500 (halogen models) |
|---|---|
| Light source | Halogen (9005 high, H11 low) |
| Voltage | 12 Volts |
| Set | Pair |
These DNA MOTORING headlights replace the factory halogen units with a chrome housing and amber corner for a refreshed, show-ready front end. They are sold as a left/right pair and use 9005 bulbs for high beam and H11 for low beam (bulbs not included). Installation is described as plug-and-play with direct bolt-on fitment for the listed Silverado years and requires no drilling or modification, though the manufacturer recommends professional installation and does not include instructions. The clear lens and halogen light source provide familiar beam characteristics and claimed improved visibility of road markings and signs in bad weather. Practical strengths are the OEM-equivalent fitment and visual upgrade while staying with halogen electricals, but buyers should note these are not LED units and will not match the brightness or longevity of LED conversions. Also the package omits bulbs and installation instructions, so expect a little extra work or installer cost to get them working on the truck.
Best for: Buyers who want a direct-fit visual upgrade for their specified Silverado that keeps a factory-style halogen setup and prioritizes reliable, tested fitment over converting to LED.
Less Ideal for: Drivers seeking maximum nighttime brightness, lower long-term maintenance, or an LED appearance should consider LED conversion kits or factory-style LED assemblies instead.
- Vehicle-specific bolt-on fitment for the listed Silverado model years minimizes modification.
- Clear lens with chrome housing and amber corner updates the truck’s front-end appearance.
- Uses common 9005/H11 halogen bulbs for easy sourcing and replacement.
- Water-resistant, air-tight lens construction helps protect against moisture and road debris.
- Bulbs are not included so buyer must purchase and install bulbs separately.
- No printed installation instructions are provided which may complicate DIY fitting for some users.
Verdict: Choose these if you want a straightforward, direct-fit chrome-amber headlight pair that refreshes your Silverado’s look while retaining factory halogen operation.
7. DNA MOTORING Pair Headlight Assembly for 2003–2006 Chevy Silverado/Avalanche, Chrome/Amber
| Compatible years | 2003-2006 |
|---|---|
| Bulb types | 9005 high, 9006 low |
| Lens material | Polycarbonate |
| Assembly required | No |
| Automotive fit type | Vehicle Specific Fit |
These DNA MOTORING headlight assemblies are a direct-fit replacement kit for 2003–2006 Silverado and Avalanche trucks that includes both headlamps and bumper lights. They accept standard 9005 high-beam and 9006 low-beam bulbs (not included) and are intended for plug-and-play installation without drilling or body modification. The units use clear polycarbonate lenses with chrome/amber housings and are described as sealed and water resistant to protect against weather. For day-to-day driving the assemblies restore factory-style illumination and refresh the truck's front-end appearance; they also match OEM mounting points and reported part numbers for straightforward fitment. Limitations to consider are that bulbs are not supplied and the listing advises professional installation if you are not comfortable with wiring or aiming, and compatibility is limited to models without factory cladding. For buyers prioritizing a safe, factory-like replacement this kit provides a practical, tested option, but factor in bulb selection and installation effort when planning the swap.
Best for: Buyers who want a like-for-like, factory-style replacement for older Silverado/Avalanche trucks and value straightforward fitment and weather-resistant construction.
Less Ideal for: Do not choose this if your vehicle has factory cladding or you want a headlight kit that includes bulbs and detailed installation guidance.
- Vehicle-specific fit for 2003–2006 Silverado and Avalanche models without factory cladding
- Includes both headlight assemblies and bumper lights for a complete front-end replacement
- Sealed polycarbonate lenses claimed to be water resistant for durability in bad weather
- Uses common 9005/9006 bulb types for easy sourcing and bulb upgrades
- Bulbs are not included, so purchase of compatible bulbs and possible aiming is required
- No installation instructions included and professional installation is recommended if unsure
Verdict: A practical, vehicle-matched replacement that restores factory-style lighting and appearance for 2003–2006 Silverado and Avalanche trucks without cladding.
Choosing the Right Chevrolet Silverado 2500 HD Headlight Assembly: Key Factors to Consider
Fitment and Connector Compatibility
Accurate fitment matters because the headlight assembly must align with the Silverado 2500 HD mounting points to maintain headlamp aim and prevent vibration. Poorly fitting units can leave gaps that allow water ingress or cause misalignment that produces glare for other drivers.
Also check electrical connector types and whether the assembly accepts the factory wiring and bulb sockets. Some replacements are direct-fit plug-and-play while others may require adapters or minor wiring changes. Ensuring connector compatibility reduces installation time and avoids potential electrical issues.
Beam Pattern and Light Output
Beam pattern determines how light is distributed on the road and shoulder. For the Silverado 2500 HD, a clean cutoff for low beams and a focused hotspot for high beams help you see hazards without blinding oncoming traffic. Look for assemblies that maintain the OEM pattern or clearly document their beam characteristics.
Light output, measured in lumens, affects visibility distance and peripheral illumination. Consider whether you mainly drive on dark rural roads, highways, or in urban areas and choose an assembly with output suited to those conditions while staying compatible with your vehicle's headlight housing and aiming system.
Lens and Housing Durability
Headlight lenses are exposed to UV rays, road debris, and temperature cycling. Polycarbonate lenses vary in UV coating quality; better coatings resist yellowing and hazing that reduce light output over time. The housing should use corrosion-resistant materials and robust mounting tabs to survive off-road or heavy-duty use common with Silverado 2500 HD trucks.
Good seals and gaskets are essential to prevent moisture accumulation and fogging. Inspect manufacturer specifications for IP ratings or descriptions of sealing methods to ensure long-term clarity and performance.
Bulb Type and Compatibility
Replacement assemblies may be designed for halogen, HID, or LED bulbs. Confirm which bulb type the assembly supports and whether it includes sockets compatible with your existing bulbs. If you plan to upgrade to LED, verify that the housing optics support that light source and that the vehicle's electrical system will not trigger error codes or heat issues.
Bulb accessibility matters for routine maintenance. Assemblies that allow bulb replacement without removing the entire unit save time and reduce labor costs.
Sealing and Moisture Management
Proper sealing prevents condensation, corrosion, and short circuits. For a working Silverado 2500 HD that sees varied weather and occasional water exposure, look for assemblies with quality gaskets, venting solutions to equalize pressure, and well-designed drainage paths. Poorly vented units can trap moisture that accelerates lens clouding and damages reflectors.
Some manufacturers include desiccant packets or vent membranes; others rely on mechanical venting. Understand the assembly's approach and how it aligns with your vehicle use and local climate.
Installation and Adjustability
Installation complexity influences whether you can do the job yourself or should plan for professional help. Direct-fit assemblies that reuse factory fasteners and connectors are easiest. Units that require headlight alignment after install should provide access points for aiming screws.
Adjustability matters for achieving correct aim. A headlight that cannot be aimed properly will compromise visibility and may not meet road regulations. Consider whether you have the tools and knowledge to adjust beam aim or need an assembly that simplifies that process.
Types of Headlight Assemblies Available
Replacement headlight assemblies for the Silverado 2500 HD are offered in several configurations to match the truck's original setup and accommodate different bulb technologies. You will commonly find complete housings that include lens, reflector, and mounting brackets, as well as partial assemblies intended to reuse factory components.
- Complete assemblies: include lens, reflectors, and mounting hardware for a full swap.
- Direct-fit housings: designed to match OEM mounting points and wiring for plug-and-play replacement.
- Projector vs reflector designs: projector assemblies can offer more controlled beam cutoffs, while reflector units often provide broader spread.
When to Replace the Headlight Assembly
Replace the entire assembly if the lens is severely yellowed or cracked, if the reflector surface is damaged, or if moisture repeatedly collects inside despite resealing attempts. Cosmetic restoration kits can help minor haze, but structural damage or persistent fogging usually justifies a full replacement.
If your headlight no longer aims properly because of broken mounting tabs or if you plan to upgrade bulb type and the current housing does not support it, replacement is the practical route. Regular inspection after off-roading or collisions will help you catch problems early.
- Visible cracks or broken mounting tabs
- Persistent internal condensation
- Severe lens yellowing that reduces light output
- Damaged reflectors or missing internal components
Upgrading to LED Bulbs: What to Consider
Switching to LED can increase lumen output and reduce power draw, but not every headlight assembly is optimized for LED sources. The optical geometry of the reflector or projector must match the light emission pattern of LEDs to avoid scatter or glare.
If you upgrade LEDs in a housing designed for halogen, expect changes in beam pattern. Check whether the assembly provides proper heat dissipation or requires aftermarket heat sinks. Also verify electrical compatibility and whether you need resistors or CAN bus adapters to prevent dashboard errors.
- Confirm housing optics match LED emission pattern
- Ensure adequate heat management for LED units
- Verify electrical compatibility with vehicle systems
Maintaining Clarity and Preventing Yellowing
Preventive maintenance extends the life of a headlight assembly. Regularly washing the lens, parking in shaded areas, and applying UV-protective coatings can slow yellowing. If you live in areas with harsh sunlight or road salts, more frequent inspection is wise.
For existing haze, restoration kits can temporarily improve clarity but may not restore original optical quality. When restoring, follow product instructions carefully and consider reapplying a UV sealant to protect the repaired surface.
- Wash lenses gently with automotive-safe cleaners
- Apply UV sealants after restoration
- Inspect seals after winter or off-road use to prevent moisture ingress
Legal and Road Safety Considerations
Headlight aim and beam cutoff affect oncoming traffic safety and compliance with local vehicle regulations. After installing a replacement assembly, confirm the beam alignment meets legal standards and does not produce excessive glare. Misaligned or overly bright lights can result in citations or create hazardous driving conditions.
Some aftermarket assemblies alter the visible color temperature of the light. Color temperatures should remain within acceptable ranges for road use and reflectors should produce a defined low-beam cutoff to avoid blinding other drivers.
- Check local regulations on headlamp color and output
- Always aim headlights after installation
- Avoid modifications that produce excessive glare
How We Chose the Best Chevrolet Silverado 2500 HD Headlight Assembly
To select the seven headlight assemblies listed, we applied filters that reflect real-world needs for Chevrolet Silverado 2500 HD owners. Primary evaluation criteria included precise fitment to factory mounting points and electrical connectors, verified beam pattern and lumen output to ensure safe on-road illumination, and lens and housing materials that resist UV yellowing and impact over time. We also prioritized assemblies with proper sealing against moisture and dust, and compatibility with common bulb types including halogen and LED configurations.Additionally, we assessed installation complexity and whether the assemblies allow reuse of original bulbs or require plug-and-play adapters. Long-term durability factors such as corrosion-resistant brackets, quality gaskets, and warranty terms were considered. Exclusions included any assemblies with unclear fitment information, products lacking proper lens certifications, or units that required extensive vehicle modification. The result is a focused set of options that balance lighting performance, durability, and installation practicality for the Silverado 2500 HD.
Our full evaluation process is outlined in our review methodology.
FAQ
How can I tell if my Silverado 2500 HD headlight assembly needs replacing?
Look for cracked or bubbled lenses, persistent internal condensation, broken mounting tabs, or noticeably reduced light output. If restoration does not return clear optics or the mounting is compromised, replacement is the safer choice.
Can I replace just the lens instead of the whole headlight assembly?
Sometimes the lens can be replaced or restored, but many modern assemblies are sealed units. If the housing or reflector is damaged or the assembly is sealed, you will usually need to replace the whole unit for reliable performance.
Will upgrading to LED bulbs improve visibility without changing the assembly?
LEDs can increase brightness, but the assembly's optics determine beam pattern. Installing LEDs in a housing designed for halogen may change the cutoff and create glare. Verify optical compatibility and cooling requirements before upgrading.
How difficult is it to install a replacement headlight assembly on a Silverado 2500 HD?
Difficulty varies by assembly type. Direct-fit units that reuse factory mounts and connectors are often straightforward and achievable with basic tools. Some assemblies require partial removal of surrounding trim or headlight aiming after installation, which may add time and complexity.
What should I do if the new assembly fogs up after installation?
Check that all gaskets and vents are seated correctly and that any vent membranes are unobstructed. If moisture persists, verify mounting points are sealing properly and consider removing the unit to dry and reseal with appropriate gaskets or sealant.
Does replacing the headlight assembly affect bulb access and maintenance?
Yes. Some replacement assemblies are designed so bulbs can be replaced from the engine bay, while others require partial removal of the assembly. Consider how easy bulb access is when selecting a unit to reduce future maintenance time.
Final Verdict
For Chevrolet Silverado 2500 HD owners, prioritize fitment accuracy, correct beam pattern, and long-term lens durability when choosing a headlight assembly. Think about whether you need a housing that supports LED upgrades, how well the unit seals against moisture, and whether you can install and aim the lights with available tools.Balancing lighting performance and durability will give you the safest outcome on night drives. Focus on assemblies that match factory mounting and electrical connections, offer clear optics, and include robust seals so you can confidently restore reliable nighttime visibility.
