What is the brown wire for on a trailer?
running light functions
The green wire on the right side carries right turn signal and brake light functions, while the brown wire carries running light functions. On the left side, the yellow wire carries the left turn and brake lights and the brown wire carries the running lights.
Why does my trailer have two brown wires?
The brown (running light) wires all run to each other as they carry the same circuit. The reason there is two browns on the trailer side is because there are running lights that are on both sides of the trailer. Aside from that all the rest of the colors match with the white running to the trailer frame as a ground.
What color wires go together for trailer lights?
Trailer Wiring Colors Each connects to a different function: Brown wire to the tail or parking lights. Green wire to right turn signal/brake light. Yellow wire to the left turn signal/brake light. White wire to common or chassis ground.
What does TM stand for on a trailer plug?
NOTE: Identify contacts by looking into the open end of plug or socket.
| Plug | Color | Description |
|---|---|---|
| LT | YELLOW | Left Turn Signal |
| RT | GREEN | Right Turn Signal |
| TM | BROWN | Tail Lights |
| CENTER | RED | Charge Line |
Do trailer lights need to be grounded?
Each lamp needs to be grounded either through its mounting studs being in direct contact with the trailer frame or by having a jumper wire ran from the lamp to the trailer frame. Ground the trailer connector at the front of the trailer, which will use the trailer frame as a ground wire.
What does EB stand for on a trailer plug?
electric brake
EB would stand for electric brake on a trailer connector. This is the circuit that carries voltage to the brake assemblies of the trailer. XL would be auxiliary and is typically a 12 volt power circuit used for lights or maintenance charge on a trailer battery.
What does TM mean on a 7 pin trailer plug?
tail lights
TM stands for tail lights. When you plug the tester in the housing on your car/truck & turn on your headlights, it should light up indicating your tail lights are working. Keep in mind, this is testing the circuit for the tail lights on your trailer. Not to tell if tail lights on your car/truck are working.
Where does the red wire go on a trailer plug?
Expert Reply: The red wire is the turn signal wire and will be run to the green wire of your harness if its the right turn signal side, and the black wire will run to the brown wire of your harness.
