Description
WAS 1138J Truck Outline Lamp
Your orange side marker is out. Or the lens is fogged. Or the MOT inspector flagged it last time. The WAS 1138J truck outline lamp fixes it. £13.49. 12-24V LED. Orange. Side or front fitment. Fit it and stop the advisories.
What Is the WAS 1138J Truck Outline Lamp?
How the Orange LED Outline Lamp Works
The 1138J runs on 12V and 24V systems. One lamp for mixed fleets. Orange LED light for side marking and front position. Internal driver adjusts voltage automatically. No relays. No converters. Just connect and mount.
Why Orange Outline Lamps Fail
UV from sunlight destroys clear lenses. Vibration cracks the housing seal. Filament bulbs die every 6 to 12 months. The 1138J uses LEDs rated for 50,000+ hours. Orange colour is baked into the lens — not painted on. No fading. Npeeling. No repeated replacements.
WAS 1138J Truck Outline Lamp — Full Specifications
| Specification | Value |
|---|---|
| Manufacturer | WAS |
| Part Number | 1138J |
| Voltage | 12V – 24V |
| Colour | Orange |
| Lamp Type | LED |
| Light Source | Orange LED array |
| Mounting | Surface mount |
| Lens Material | Polycarbonate |
| Ingress Protection | IP67 |
| Condition | New |
| EAN | 5903098093921 |
WAS 1138J Truck Outline Lamp — Compatibility
Confirming Fitment
Fits any commercial vehicle requiring ECE-approved side or front outline marking. Trailers over 6 metres need orange side markers. Rigid trucks need front orange position lamps. The 1138J handles both. Surface mounts to vertical or angled body panels.
Check the Road Vehicles Lighting Regulations 1989 — vehicles over 6 metres in length must show orange side marker lamps at intermediate positions.
Cross-Reference Table
| Brand | Trade Number |
|---|---|
| WAS | 1138J |
| WAS (standard) | 1138 |
| Hella | 2BA 003 843-021 |
| Aspöck | 0851-0301 |
| PROPLAST | 40100006 |
| Truck-Lite | 60203A |
When and Why to Replace
1138J Symptoms — What to Watch For
Symptom one — Light completely dead. No orange output. The LED driver has failed. Water ingress is the usual cause. Your side marking is incomplete. Illegal on vehicles over 6 metres.
Symptom two — Dim or patchy output. Half the LEDs work. The rest are dark. The LED board is failing progressively. Replace now. Next week it will be completely dead.
Symptom three — Orange has faded to yellow or white. Cheap lamps use orange paint on clear lenses. UV destroys the paint. The 1138J uses orange polycarbonate. The colour cannot fade. If your old lamp looks yellow, it was never legal.
Fix Side Marker Failures — Fit Orange LED Once
Filament orange bulbs need replacing every year. Paint-coated lenses need replacing every two years. The 1138J costs £13.49 once. LEDs last the life of the trailer. No ladder climbs. MOT advisories. repeat labour.
Why Choose the WAS 1138J Truck Outline Lamp?
12V to 24V automatic operation
One lamp for mixed fleets. 12V rigid. 24V artic. Same part number. No voltage confusion. No blown lamps from wrong voltage. The internal driver accepts 10V to 30V DC.
Orange polycarbonate lens — no paint, no fade
Cheap lamps use clear polycarbonate with orange paint. Heat and UV bake the paint. The 1138J uses orange-coloured polycarbonate throughout. The colour is in the material. Cannot peel. fade. or fail a MOT for wrong colour.
ECE approved for side and front marking
The 1138J carries ECE R48 and R10 approval. WAS technical documentation confirms legal compliance. Orange for side marking. Amber for front position. Same lamp. Both legal applications. No ambiguity.
Buy WAS 1138J Truck Outline Lamp Online
£13.49 each. New WAS LED outline lamp. Same-day dispatch. Buy in pairs — left and right sides. Buy six for a full 13.6m trailer. Stock your workshop properly.
Installing the WAS 1138J Truck Outline Lamp
Isolate the trailer lighting circuit. Disconnect from the tow vehicle.
Remove the failed orange marker lamp. Usually two self-tapping screws.
Cut the old cable back to clean copper. Strip 8mm of insulation.
Connect the new 1138J. Red to positive (+). Black to negative (-). Use heat shrink butt connectors — not twist-and-tape.
Mount the lamp. Surface mount with two screws. Use rubber sealing washers under each screw head.
Secure the cable with cable ties every 200mm. Prevent chafing on chassis edges.
Test function. Orange light must illuminate steadily. No flickering.
Apply non-corrosive silicone around the screw heads. Stop water tracking behind the lamp.
Professional fitting time: 8 minutes per lamp including cable routing.
FAQs
What is the difference between orange and amber for outline lamps?
In legal terms, orange and amber are the same colour range under ECE R48. The 1138J produces approved orange/amber light. Use on sides and front only — never on the rear.
Can I use the 1138J on the rear of my trailer?
No. Rear outline lamps must be red. The 1138J is orange. Using orange on the rear is illegal. Order the WAS 545BC/I/MC for red rear fitment.
My trailer has 24V electrics. Will the 1138J work?
Yes. The 1138J accepts 10V to 30V DC automatically. 24V systems sit perfectly within that range. No modifications needed.
How many orange markers does my trailer need?
For a 13.6m trailer: one at each front top corner (amber), one at each side midway, one at each rear top corner (red). Total six outline lamps. The 1138J covers the side and front positions.
Will this pass a UK MOT and annual trailer test?
Yes. Orange side markers are mandatory on vehicles over 6 metres in length. The 1138J carries ECE approval. Mount at the correct height — between 250mm and 1500mm from the ground.
