Trailer issue

[bab33face]

My SUV has a 4pole harness so I bought this adapter to convert to a 5pole
http://www.etrailer.com/tv-wir....aspx

There is not much to the harness, you just plug it into your 4 pole and wire up the blue wire to the reverse light using a scotchlock.

I tested everything after wiring it up by starting the car and using a test lead
White - Ground
Brown - Constant on
Yellow - Constant on - intermittent when signaling right
Green - Constant on - intermittent when signaling left
Blue - Turns on when I put the car in reverse

After testing everything without the trailer hooked up I turn off the car and plug her in. Now here's where the problem starts.

As soon as I turn on the car the display panel shows a VMS error. If I step on the brakes it tricks the car into thinking that it is in reverse - the reverse light comes on in the dash, the backup camera turns on, and the reverse lights on the car engage.

The Trailer lights don't turn on, but the reverse lights on the trailer turn on if I step on the brakes just like the car.

What could be going wrong. I just picked up the boat 2 weeks ago and haven't towed it. My buddy plugged in with his Nissan Titan last weekend and everything appeared to be working fine.

[bab33face]

Here is a picture of the plugged in harness.
The trailer harness is on the left, 5pole adapter harness on the right.

[Lyn O. Dyer]

somethings wrong on the truck side of the wiring..

[bab33face]

Anyone else with any ideas?

[Skeet'r89]

Something is wrong.
OK, brown should only be hot when the running lights are on
Green wire should only be flashing when turn signal is on- forget which side
Yellow should only be flashing when turn signal is on - other direction.
Emergency flashers on- both yellow and green should be hot( flashing )

[Lyn O. Dyer]

Yellow wire is for the left tail light
Green is for the right side tail light
Brown is for thr clearence lights
White is the ground
Blue is for the reverse solenoid
this is not rocket science guys..

[Lyn O. Dyer]

a 4 wire connector will not work for or with a 5 wire system..

[garanger]

VMS error and backup camera tells me you have a problem with ther way the truck plug is wired. You obviously dont have a 70 Chevy PU seek professionsl help before you have a real problem.

[985ron]

did you check your trailer ground wire(white ). MY OTHER SUGGESTION WOULD BE TO GO TO A TRAILER STORE AND HAVE A 7 WAY PLUG INSTALLED ON THE TRUCK THEN GET A 7 TO 5 ADAPTER

[bab33face]

The problem has now been resolved.

I added a new ground connector on the trailer and retapped the reverse lights on a different section of the wiring harness. One of the two items fixed the issue.

The trailer wiring harness has seen better days though. Anyone know how much it would cost to redo the trailer wiring?