Is Wire Removal Required when Replacing the Wesbar 3504 Tail Light

Question:

Jon, I got the light yet the colors don’t match. The light has brown yellow and white ground. Trailer has red and brown. Any ideas how to hook up ? Thanks

asked by: Bob

Expert Reply:

If you are replacing your Wesbar 3504 tail light then there is no need to remove the wiring from inside the assembly itself.

A replacement light, like part # ST17RB for the left hand or part # ST16RB for the right hand, will come with its own wiring that you will connect to the wiring on your trailer.

A review video and an installation video have been linked for you to reference.

expert reply by: Jon G

Bob

11/21/2017

Jon, I got the light yet the colors don’t match. The light has brown yellow and white ground. Trailer has red and brown. Any ideas how to hook up ? Thanks

Jon G.

11/21/2017

Sometimes wiring colors don't always match. In that case it is typically best to have a Circuit Tester # PTW2992 so that you can verify the different wire functions on your trailer. However, since there are only a few wires on part # ST17RB you should be able to easily test them and connect them function for function with your current wiring. The White wire is Ground, the Brown wire is for Taillight Circuit (running lights), and the Yellow Wire is for the Stop/Turn signals. Simply touch the brown or yellow wire to the brown or red wire on your trailer and activate your turn signal. Whichever wire on your trailer sends out a pulse signal is the turn/stop wire.