Trailer Battery Charge +12V on '04 Dolphin - Where is it?

[keninvic]

My '04 Dolphin on a '03 Workhorse Chassis has a 6 pin trailer connector. There is a red wire on a pin that should provide +12V charge to the trailer battery. I traced the wire to a harness where it connects to a light blue wire. Tried following that wiring harness under the chassis but it joins into a larger harness and I cant determine where it goes from there. Does anyone know where I can pickup the front end of the trailer connector wiring?

[DriVer]

Quote:

Originally Posted by keninvic My '04 Dolphin on a '03 Workhorse Chassis has a 6 pin trailer connector. There is a red wire on a pin that should provide +12V charge to the trailer battery.

I have not seen where an OEM will provide a 12V charge wire for a trailer. If you are seeing a blue wire there is a good chance that it's the brake wire.

[Fred and Bonnie]

Not sure how NRV hooked up the wiring, however this link shows a common 6 pin arrangement.

Trailer Wiring Diagrams | etrailer.com

fred

[keninvic]

Quote:

Originally Posted by Fred and Bonnie Not sure how NRV hooked up the wiring, however this link shows a common 6 pin arrangement. Trailer Wiring Diagrams | etrailer.com fred

They had hooked up the backup lights to the connector for the electric brakes; everytime I backed up the brakes came on the trailer, I disconnected that and ran my own brake control blue wire. The charge connector pin has a red wire on it, and that is connected to a lt blue wire on the chassis, it has to go somewhere.

[davebw31]

You will find the Workhorse trailer harness end at the rear of the last crossmember in the rear. This harness runs down the RH inner frame rail, then crosses over to the LH frame rail. The trailer harness plug is in convoluted plastic loom which is about 3/4 of the way over to the LH rail. It will be in a lot of black plastic tape. From there it continues to the LH rail and then to the end of the frame rail. There are only 4 wires!

I ended up running a 12 gauge seperate blue wire for my trailer brakes since I pull a 26' Pace race car trailer and did not want any voltage drop to my two axel brakes from my brk. controller. At the same time I ran a 8 gauge wire for 12V power supply to power my 12 V power winch, emergency break-away system, power to my 12V lights, etc. I tapped off of the Power Dist. Center up at the LF by the pwr. jack resviour. There are two posts (metric thread) to mount terminals to and two fused circuits for fuses.