Will Optronics LED Trailer Clearance and Side Marker Light Ground Wire Need to Be Attached
Updated 12/22/2025 | Published 10/27/2024
Question:
The trailer I have now only has the white power line ran to it. If I buy new running lights that have the power and ground line coming out the back do I need to hook up both in order for it to work or do I just hook up the power and cut the ground off?
asked by: Shawn C
Expert Reply:
Hi Shawn; you will need to attach the white ground wire on the # MCL44AB and similar lights. If you cut it off the light would not work properly. The light you have now grounds through the mounting hardware which is why you only see a single wire.
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
- Rear Clearance
- Side 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
- Article: How to Tell the Weight Rating of a Trailer Axle
- Article: Holiday 2025 | Staff Picks for Real-Life Adventures
- Article: Trailer Wiring Diagrams
- Article: Trailer Lighting Requirements
- Q&A: Replacement LED Marker Lights for a 2009 Timberlodge Camper
- Q&A: Recommended Tire Size for Upgrading Tires From 7.00-15LT on My Horse Trailer
- Q&A: LED Replacement Lights For Grote 9015 and Glo Brite 118A/117R Clearance/Marker Lights
- Q&A: Recommended Hitch for a 2012 Mercedes-Benz Sprinter w/ a 30 3/8" Wide Frame
- Q&A: Replacement Lenses and Lights for Glo-Brite 118A/117R
- Q&A: Replacement Wheels And Hubs For A Triton LTWCI Personal Watercraft Trailer
- Q&A: Will Furrion Grates Fit Atwood Stove In 2016 Airstream 23 FB?
- Article: Wiring Trailer Lights with a 5-Way Plug (It's Easier Than You Think)
- Article: What are the Common Types of Propane Fittings Used on RVs?
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
Robin H.
12/22/2025
Hey Shawn, how did things go after you connected the white ground wire on your trailer lights? Knowing how the wiring worked out could help others sorting through the same setup.