Hi everyone, I just got a Tekonsha Voyager trailer brake controller. It came with a Ford harness, which I plugged into the harness under the dash in my truck. Oh, it's a 1995, has tow hitch, etc.

Here's my question: How do I check my wiring at the hitch to make sure everything works as it should? I don't have a trailer (yet), and only the flat 4-pin plug at the hitch. I'm planning on getting an adapter so I can have both the 4-pin and the 7-pin back there. Current ones back there are green, yellow, black and white. I didn't see blue, orange or brown, but couldn't get a good look since it was getting dark.

So I went up to the wiring harness under my dash to see what wires were there. Here's a pic of that:



So do I need to run wire from the harness? Or do I have what I need already and just missed it in the back? I don't have a wiring diagram on me, so I don't know which of these translate into which wires in the back. The dealer I bought it from said it used to have a trailer brake installed and I was just assuming that was the case, but now I'm not so sure. Or is it safe to assume the wiring is there somewhere since I have the harness under the dash?

 

THATS WHAT THAT IS FOR??
(under the dash) it pissed me off so i ended up breaking it off.

The four prong you have is: Green= Right blinker/brake light, Yellow= Left blinker/brake light, White=ground, brown=tail/parking/running lights.
Examine up higher between your spare tire and bumper, there might be two round plugs, one black and one grey. maybe one of yours is tucked away (the one with Reverse lights, Brake control, and Aux Positive)
mine had both already wired into a 7 pin, but i switched it to a 7 pin RV.

If you find that other connector, it should be the BLUE wire
http://www.farmbox.com/images/7WayTrailerEnd.jpg