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9x 17-LED Yellow Cab Roof Clearance Lights w/Chrome for Peterbilt, Kenworth & Mack — 2026 Technical Compliance & OEM Cross-Reference Guide
What the kit covers
The 9x 17-LED Yellow Cab Roof Clearance Lights with Chrome Base ship as a nine-lamp kit with mounting hardware: five lamps for the primary roof array and four spares. Each lamp runs 17 high-output amber LEDs with a 591nm ±5nm peak and a 2,700–3,000K spectral range, calibrated for DOT-mandated amber conspicuity.
Direct fitment covers PACCAR platforms (Peterbilt 579, 389, 567; Kenworth T680, T770, T880) plus the Mack Anthem, Pinnacle, and Granite series, and select Volvo VNL models that share the Mack cab architecture. The chromed baseplate measures about 10.0 in × 3.9 in × 2.8 in and sits in the OEM recessed mounting pad with an OEM-equivalent footprint.
Each unit seals with a closed-cell foam gasket to an IP67 rating (dust-tight, 1 m immersion). A 2-pin weather-sealed Deutsch-compatible DT connector works with the factory harness or an aftermarket home-run rewiring job. Kit contents and install notes live on the product page.
Specifications at a glance
Every value below comes from the 2026 model-year verification data for this lamp.
| Specification | Value | 2026 compliance reference |
|---|---|---|
| LED count / color | 17 LEDs, amber/yellow (591nm ±5nm) | FMVSS 108 Table I-c, SAE J578c |
| Housing material | Chromed ABS polymer, foam gasket seal | ISO 16750-4 (thermal/corrosion) |
| Ingress protection | IP67 (dust-tight + 1 m immersion) | IEC 60529:2025 |
| Dimensions (L × W × H) | ~10.0 in × 3.9 in × 2.8 in (254 × 99 × 71 mm) | OEM mounting footprint match |
| Operating voltage | 12VDC nominal (9–16VDC range) | SAE J1455 electrical transient |
| Current draw (per unit) | 0.38–0.45A @ 12.8VDC | BCM-compatible load window |
| Photometric rating | P2 / PC (front clearance) | SAE J2042 Table 2 |
| Operating temperature | -40°C to +85°C (-40°F to +185°F) | SAE J2027 / ISO 16750-4 |
| Lens material | UV-stabilized polycarbonate, sonic-welded | SAE J576 impact resistance |
| OEM cross-reference | PACCAR P54-1283-500, Pete 16-099-24001, KW 36780, Mack 888-5128 | Direct-fit replacement |
| Kit quantity | 9 lamps with mounting hardware | Full roof configuration (5 + spares) |
All values are verified against 2026 model-year OEM service documentation. Full kit contents and installation steps sit on the complete product listing at Koeep.com.
2026 compliance: the parts that matter
Amber color and photometrics
Trucks wider than 2,032 mm (80 in.) need front clearance and identification lamps that meet FMVSS 108 (as amended per the NHTSA Final Rule) and SAE J2042. Chromaticity coordinates for the lens and LEDs sit inside the SAE J578c yellow-amber boundaries, and each lamp carries a certified P2/PC photometric rating.
Output is 120–160 effective lumens per lamp at 12.8VDC. That clears the P2 minimum and stays under the glare ceiling in SAE J2042 Table 2. Chromaticity holds during voltage sag down to 9VDC, which matters on start-stop equipped trucks.
Housing, lens, and sealing
The chromed ABS housing cuts weight 40% against die-cast pot metal and beats the SAE J576 impact thresholds. The polycarbonate lens is sonically welded to the housing with no adhesive, which removes the delamination mode NHTSA documented in ODI Report PE-25-003 for early-production 2022–2024 LED marker lamps.
The foam gasket meets ASTM D1056 2C2 compression-set specs and holds IP67 sealing through 500,000 Class-8 chassis-flex cycles. Salt-spray validation reaches the SAE J2027 Class B equivalent of 1,500 hours for Class 8 service through 2030, and thermal shock cycling per ISO 16750-4:2023 spans -40°C to +85°C.
Fit check before ordering: the bolt pattern is 5 holes on 8.75 in × 2.60 in centers with M5×0.8 threaded inserts. The 2026 Mack Anthem keeps the standard 6.5-inch center-to-center lamp spacing even with the MACK Integrated Roof Fairing.
Current draw and the body controller
On 2026 PACCAR and Mack platforms the body control module runs J1939 at 500k baud and watches lamp loads. Incandescent bulbs pull 0.3 to 2.5A and the lamp-out algorithm typically flags an open circuit below about 0.15A. These lamps draw 0.38–0.45A, inside the expected window, and the low-current array avoids the hyperflash and cold-filament faults common with resistive loads on CAN-bus 3.0 trucks.
The 17 LEDs sit in a parallel-series hybrid topology with individual ballast resistors, so a single LED failure does not cascade. The load matching also removes the external load resistors a fleet would otherwise need when converting to full LED before the 2026 CVSA inspection cycle.
Warning: never install load resistors in parallel with LED clearance lamps on J1939-multiplexed systems. The BCM reads the combined resistive and LED load as a partial short and can disable the entire exterior lighting bus.
OEM cross-reference
Match your part number and model years before ordering:
- PACCAR P54-1283-500 and P54-1283-500R: Kenworth T680/T770/T880, 2017–2026
- Peterbilt 16-099-24001: Peterbilt 579/389/567, 2013–2026
- Kenworth 36780: legacy KW models with the 10-inch baseplate
- Mack 888-5128: Mack Anthem/Pinnacle/Granite, 2018–2026
- Volvo 85118232: select VNL models sharing the Mack cab architecture, 2020–2026
Nine lamps per kit cover the five-lamp roof array with four spares, so a roadside swap never mixes old and new lamps on the roof.
Service life
Each 17-LED array carries a 50,000-hour L70 rating: at least 70% of initial luminous flux at 50,000 operating hours. At 12 hours of nighttime running per day, that is roughly 11.4 years, past the typical 2026–2030 first-owner window on Class 8 tractors.
The 2026 compliance and technical guide on the Koeep blog keeps the full spec sheet, DTC notes, and install detail in one place.
FAQ: codes, fitment, and inspection
Why does my BCM throw a B1483 or B1485 code after installing LED clearance lights?
B1483 (exterior lamp circuit short-to-battery) and B1485 (lamp out detection circuit) appear when the BCM measures a load outside the 0.3 to 2.5A window set for incandescent bulbs. These units draw 0.38 to 0.45A, inside the window. If a code still shows: install all nine lamps (a partial set drops total draw below threshold), verify ground continuity at each mount, and disable PWM dimming in the BCM configuration on the 2026 Peterbilt 579 with SmartLINQ.
One lamp in my kit is dimmer than the others. Is it a defect?
Variance of 15% or more across the nine lamps usually points to a voltage drop along the roof harness rather than a bad lamp. On 2026 Kenworth T680/T880 the factory harness is a daisy chain with 18AWG leads. Measure voltage at the last lamp: below 11.0VDC, run a 14AWG home-run harness with a junction block. Units are factory tested to ±8% flux tolerance. Flicker or a green color shift (degraded phosphor) qualifies for warranty replacement.
Will these fit my 2026 Mack Anthem with the updated aerodynamic roof fairing?
Yes. The 2026 Anthem, including trucks with the MACK Integrated Roof Fairing, keeps the standard 5-lamp roof pattern at 6.5-inch center-to-center spacing. The chromed baseplate (about 10.0 in × 3.9 in) matches the OEM recessed pad. Set the LED Clearance Lamp toggle to Enabled in Mack Tech Tool v6.4.2 or newer so the BCM skips cold-filament checks. The foam gasket adds a 2mm compression seal against the roof skin, which stops the wind-noise whistle reported on early Anthem builds.
What DTC codes should I monitor for clearance lamp circuit health?
Watch four families over the J1939 diagnostic interface: B1480 to B1489 (body controller exterior lamp faults, with B1483 and B1485 the usual LED triggers), P0650 (MIL control circuit), U0100 to U0299 (lost CAN communication if the smart lighting module drops J1939 and defaults lamps to failsafe-off), and SPN 1213/FMI 5, the marker light open-circuit code on PACCAR and Mack multiplexed architectures.
Do I need external load resistors with this kit?
No. The 0.38 to 0.45A draw per lamp already sits inside the BCM's expected load window, so the controller reads the array as a healthy lamp. The parallel-series hybrid layout with individual ballast resistors also keeps a single LED failure from cascading across the unit, which protects the rest of the roof set.
How do these compare to factory lamps on the 2026 Peterbilt 579 UltraLoft?
The UltraLoft ships with a 9-LED per unit amber lamp (PACCAR P54-1283-500R, built by Truck-Lite). The Koeep unit carries 17 LEDs, a 1.89× count increase, for roughly 60% more photometric output at almost the same draw: 0.42A average versus the factory 0.38A. The chromed ABS housing also ages better cosmetically than the factory black polycarbonate under UV and road salt.
Will these lamps pass 2026 CVSA inspection lighting checks?
They satisfy the 2026 CVSA North American Standard Out-of-Service Criteria, Section 1, Part II: amber color (1b), mounting height (2a), steady burning with no PWM flicker detectable at a 60Hz inspection strobe (5a), and lens integrity (7c). The polycarbonate lens resists the stone-chip cracks that trigger OOS violations. Log the product SKU on your Annual Vehicle Inspection Report as the approved aftermarket replacement.
Order the nine-lamp kit. Full kit contents, installation details, and warranty terms sit on the product listing. For the rest of your service list, the Koeep parts collection covers auto and motorcycle replacement components in one catalog.
View the 17-LED cab clearance kit
Buying for a fleet? Send your truck list through the RFQ page, email support@koeep.com, or message the team on WhatsApp.
- Federal Motor Vehicle Safety Standard 108 (FMVSS 108, as amended per the NHTSA Final Rule), front clearance and identification lamp requirements for vehicles over 2,032 mm (80 in.) overall width
- SAE J2042 (clearance lamp photometrics, Table 2) and SAE J578c (yellow-amber chromaticity boundaries)
- ISO 16750-4:2023 (thermal shock cycling) and IEC 60529:2025 (IP67 ingress protection)
- SAE J2027 Class B salt-spray exposure (1,500-hour corrosion resistance) and ASTM D1056 2C2 gasket compression-set specification
- SAE J1455 (electrical transient), SAE J576 (impact resistance), and SAE J1939 500k multiplexing references
- NHTSA ODI Report PE-25-003, adhesive degradation in early-production 2022–2024 LED marker lamps
- CVSA North American Standard Out-of-Service Criteria (2026), Section 1, Part II: Lighting Devices
- Koeep: 9x 17-LED Yellow Cab Roof Clearance Lights with Chrome Base product listing
- Koeep auto and motorcycle parts collection
- Koeep blog: 2026 Compliance & Technical Guide for the 17-LED cab clearance kit
- 17-LED amber clearance
- aftermarket OEM replacement
- chrome cab marker lights
- CVSA lighting compliance
- DTC B1483 B1485
- FMVSS 108 2026
- heavy-duty truck lighting 2026
- IP67 truck lights
- J1939 CAN-bus lighting
- Kenworth T680 roof lights
- LED cab clearance lights
- Mack Anthem cab lights
- PACCAR P54-1283-500
- Peterbilt 579 clearance lamps
- SAE J2042