Beau Jenkins (72.86.115.164) - Thu May 22 01:13:31 2008

Vehicle came with factory "4-flat" trailer wiring harness connector, right turn signal does not work at connector. Checked for power coming into connector-found none. Attempting to trace back wire to factory trailer wiring "tie in" point. Cannot locate junction of wires. Need help locating this point.

Tested two (2) major plugs on frame, under vehicle on driver's side midway of frame. When those plugs disconnected, no effect found at rear right lamp.

Right rear "vehicle" turn lamp functions fine, just not at trailer connection????

Request factory trailer connection tie-in point.

B. Jenkins

Reply #1 KIle (64.170.19.202) - Fri May 30 16:55:39 2008

the trailer wiring (turn signals are on a seperate line than the vehicle signals. It sounds like the fuse for the trailer line is popped. Check under the hood in the fuse panel for a blown 10-15 amp litle fuse. that should do it.

Reply #2 Tony (216.68.51.2) - Sun Jun 22 17:48:22 2008

My green wire is also dead... 2000 ford ranger. has always been so. is this a ford defect? anyone know the answer yet?

Reply #3 Izen Lingenfelter (64.179.113.75) - Mon Jul 14 13:40:26 2008

I am having trouble connecting my harness to the factory plug and getting power. I checked where the factory harness is and there is no power. i checked the fuses and found 3 fuses. one for the brake lights, one for right and one for left turn signal. i checked there and found that the brake fuse area has power but niether of the turn signal fuse plug is getting power. any suggestions

Reply #4 John Morris (24.117.107.38) - Mon Jul 14 19:00:02 2008

Guys, you have a style of t/signal switch that is notorous for going out, so if your t/s lights are working and you're trying to hook up trlr wires just install saddleback wiring connectors and wire pig tails and connect them to your trlr light harness and remember, always hook up all 4 wires. 1 goes to R, 1 goes to L, 1 goes to Tail Lights and the other wire goes to ground.

All turn signal lights have 2 wires going to them and one is always ground. Same with the tail lights. The body of the vehicle is always the ground point, so@@@ with the switch on and either t/signal on hook up the trailer light on that side then switch the other side on to hook them up.

Then shut them off the t/s and turn on the tail lights so you can hook them up. And Black is always GROUND...

The color of the trlr hook up wires you use in any position doesn't really matter just so you use the black for the ground. A last note: If your wire harness doesn't have 4 wires just make sure to hook up a ground wire from the frame to the trailer hitch or trailer so you can get a decent groung thru the metal. Don't put grease on the hitch if you want a good ground with no ground wire connected...

Reply #5 Johnny (216.239.87.143) - Mon Jul 14 23:14:45 2008

THE GEM ISOLATES TURN AND STOP SIGNALS FROM THE OEM TRAILER CONNECTION! STOP SNIFFING THE HARNESS; Generic Electronic Module varies in location, my 1999 is on left rear fender.

Yes , separate Grounds are a "feature of the Ford trucks!

The ball hitch is not a good substitute for a good chassis connection which you should be able to make just about anywhere

at the rear of the Explorer.

Reply #6 Kenny (66.210.194.98) - Mon Jul 28 14:29:14 2008

I'm trying to wire my 2000 for Explorer with a 4 wire trailer harnes but can't seem to get the headlights and brake lights working. I can get one or the other but when I try to hook them up to work together, the headlights come on when I hit the brake. there appears to be a sepeerate wire for the headlights and brake lights on the Explorer. The wire colors don't match the 4 wire wiring diagrams I have.

Any idea as to how to wire this thing?

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