Troubleshooting Side Maker Lights Not Working When Going From 2-Wire Lights To 1-Wire Connections
Updated 09/19/2021 | Published 09/18/2021
Question:
I wanted to replace the marker lights on my reefer trailer. The old ones are 2 wire but the new ones are single wire. I took the first old one off and wired up the first new one but I now have no power to it and the rest of the old ones on that side quit working. The old ones on the opposite side are still burning. What happened?
asked by: Adrian
Expert Reply:
It sounds like when you connected your single wire marker light like the Optronics LED Trailer Clearance and Side Marker Light # MCL44AB1, your ground connection on that side was removed. This would cause all the other lights on that circuit to no longer work.
The single wire style marker lights ground themselves when through the mounting hardware. If your mounting hardware is not grounded to the frame and the frame back to the trailer connector you will not have a complete circuit.
If you remove the lens cap on your light you should see a wire with an eyelet for the mounting hardware to pass thorough. If your reefer trailer does not have a grounded structure you can remove that eyelet and run the ground wire from your trailer into the light and make the connection there if you have enough room. If the wire is long enough you may be able to run it outside of the housing to make the necessary connection.
Product Page this Question was Asked From
Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 Diodes - Amber Lens
- Trailer Lights
- Clearance Lights
- Marker
- Rectangle
- Surface Mount
- Non-Submersible Lights
- LED Light
- 4L x 1-1/2W Inch
- Amber
- Optronics
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: wesbar 3395
- Shop: Thinline LED Clearance and Side Marker Light - Submersible - 3 Diodes - Rectangle - Amber
- Shop: Thinline LED Clearance and Side Marker Light - Submersible - 3 Diodes - Rectangle - Red
- Q&A: Difference Between Wesbar 271584-01 Taillight and 271584 Taillight
- Search Results: wesbar replacement light
- Search Results: trailer lights
- Search Results: wesbar work lights
- Shop: Optronics Smoke Lens Identification Light Bar - Red
- Shop: LED Trailer Clearance or Side Marker Light w/ Reflex Reflector- 3 Diodes - White Base - Amber Lens
- Shop: Right Angle 2-Wire Pigtail for Optronics Trailer Lights - 2-Prong PL-10 Plug - 6" Lead
- Shop: Optronics Trailer Clearance or Side Marker Light w/ Reflex Reflector - Incandescent - Red Lens
- Shop: Optronics Trailer Clearance and Side Marker Light - Submersible - Rectangle - Amber Lens
- Search Results: trailer hitch
- Article: Trailer Wiring Diagrams
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Shop: Trailer Hitch
- Search Results: trailer tires and wheels
- Video: Measuring To Choose The Right Trailer Axle
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Wiring
- Shop: Suspension Enhancement
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: trailer wiring
- Q&A: Instructions to Wire a Trailer for Electric Brakes
- Video: How to Choose a Trailer Brake Controller
- Shop: Brake Controller
- Article: Trailer Lighting Requirements
on Trailer Lights
