How to Wire Marker Light With Red and Black Wires
Updated 03/29/2023 | Published 03/28/2023
Products Featured in This Question
Question:
If i have a light with only a red and black wire, no white wire i want to use the light as the marker lights only, no blinker or brake lights. what do i connect the wires to on the wire harness of the trailer?
asked by: Erik
Expert Reply:
More than likely the red wire is for power and the black wire is the ground on your light. Assuming your trailer lights follow standard colors like on the # 16-4B-1, the red wire on your light will connect to the brown trailer wire which is for the running lights and the white wire is the ground. If you hook the light up and it doesn't work simply reverse it.
Product Page this Question was Asked From
etrailer Rubber Hitch Cover for 2" Trailer Hitches - Qty 1
- Hitch Covers
- Misc Covers
- Plain
- Rubber
- Fits 2 Inch Hitch
- Standard
- Square
- etrailer
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Q&A: How to Wire Trailer Clearance Lights with Black and Red Wires
- Video: The Low-Down on the Pole-Tongue Adapter for Equal-i-zer Weight Distribution Systems
- Shop: Pole-Tongue Adapter for Equal-i-zer Weight Distribution Systems - 14,000 lbs GTW, 1,400 lbs TW
- Shop: Reese Pole-Tongue Adapter for Weight Distribution Systems - 14,000 lbs GTW, 1,400 lbs TW
- Shop: Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 10,000 lbs GTW, 1,000 lbs TW
- Shop: Blue Ox Pole Tongue Weight Distributing Hitch Adapter
- Shop: Trailer Hitch
- Shop: Suspension Enhancement
- Shop: Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 7,000 lbs
- Q&A: Black and Red Wire Connection on Trailer Tail Lights
- Shop: Camper Tie-Downs
- Shop: Blaylock Total-Encasement Coupler Lock for 2" Bulldog Collar-Lok Couplers - Push Button
- Shop: EcoHitch Hidden Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Search Results: b&w graphite lube plate
- Shop: Truck Bed Mat
- Search Results: 5th wheel hitch adapter
- Search Results: bed mat
- Video: Review of Curt Fifth Wheel Installation Kit - Ford/GM Adapter Kit - C88KR
- Video: Curt 5th Wheel Hitch Adapter Rails Installation - 2022 Ford F-450 Super Duty
- Article: Trailer Wiring Diagrams
- Q&A: Wiring Guide For The Furrion RV Side Camera W/ Night Vision
- Search Results: roadmaster tow bar parts
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Q&A: What Color Trailer Wires go to the Red, Black and White Taillight Wires
- Q&A: Red, Black, and White Wire Functions on Old Trailer Light
- Q&A: Trailer Running Lights Do Not Work but Brake Lights and Turn Signals Do Work
- Shop: Trailer Wiring
- Q&A: Why Does a Marker or Clearance Light Only Have One Wire
- Video: The Low-Down on the Buyers Products 2" King Pin Lock
- Video: etrailer 5th Wheel King Pin Lock Spec Review