Trailer Wiring
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Joined: Nov 2008
Posts: 8
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From: St George
Trailer Wiring
I'm looking for a wiring harness similar to this one in the link ( i hope i can link it). what i have is a 4 wire flat and i want to switch it out for a 7 wire. anyone know of where i could find it, or perhaps a part number i can search for. The book at local shop doesnt go back far enuf for listing a 89.
Misc Crap :: 0211000731.jpg picture by Magnums78 - Photobucket
1989 F350 4x4 crew cab.
Misc Crap :: 0211000731.jpg picture by Magnums78 - Photobucket
1989 F350 4x4 crew cab.
FTE Chapter Leader
Joined: May 2006
Posts: 11,273
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From: North Dakota
The part that will hook up to your pickup, will be just the 4 flat, and you will have to wire the other parts yourself, like the backup lights, + batt, and trailer brakes... so basicaly if I where you, I would cut the trailer plug off the harness you have and wire it into the 7 RV plug.. than run the extra wires you need..
Postmaster
Joined: Aug 2005
Posts: 4,728
Likes: 8
From: Cleveland, TN
X2
If you need help with the 7 pin connectors,,, here you go..
http://img156.imageshack.us/img156/8...trailerend.jpg
http://img710.imageshack.us/img710/8950/7waycarend.jpg
If you need help with the 7 pin connectors,,, here you go..
http://img156.imageshack.us/img156/8...trailerend.jpg
http://img710.imageshack.us/img710/8950/7waycarend.jpg
Senior User
Joined: Nov 2006
Posts: 342
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Plug that back into the truck & go buy a Draw-tite 18321. It is a 7-way socket that your flat 4 plugs into & then you have to run the rest of the wires for E-brakes, reverse, hot, etc. No since cutting wire if you don't have to.
