How Does Trailer Clearance Light # STL78AB Wire to Clearance Light with Tail and Turn Signal

Question:

I would like to put these on my camper.My question is the white wire is ground,the black is marker,the red is turn.Thats the same for the brake light.Wont the brake light go on and cancel the turn signal?

asked by: Chris

Helpful Expert Reply:

The white wire of the clearance light part # STL78AB that you referenced is the ground, the black is for the running light circuit and the red is for turn circuit. Since standard trailer wiring has the brake and blinkers on the same circuit you'd need a signal converter to separate out just the turn signals for this.

For that you'll need the part # 118158 wired up like the picture I attached.

expert reply by: Jameson C