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Thread: Trailer Wiring Diagrams Pinouts
05-09-2007, 07:35 AM #1
Trailer Wiring Diagrams Pinouts
2007 Ford E250(Work van) (Ya, Ya, shut up!)
1996 GMC Sierra SLE 1500 5.7L/4L60E
05-09-2007, 10:25 AM #2
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excellent graphics Cableguy! I can't think of much to add to that, except for maybe easy tap-in points for the turn signal lights. I'll get to that later though.Christopher
1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 199K miles
2005 Saturn ION-2 Stock 255K miles
1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half
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05-09-2007, 06:04 PM #3
Trailer Wiring Diagrams
4 Way Systems
Flat molded connectors allow basic hookup for three lighting functions; right turn signal, left turn signal, stoplight / marker and a ground.
4 way tow vehicle side.
4 way trailer side.
05-09-2007, 06:05 PM #4
5 Way Systems
Same as 4 way system listed above but adds a extra red or black auxiliary power wire.
5 way tow vehicle side.
5 way trailer side.
05-09-2007, 06:06 PM #5
6 Way Systems
Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights and electric brakes.
6 way tow vehicle side.
6 way trailer side.
05-09-2007, 06:07 PM #6
7 Way Systems
Round 2" diameter connector allows additional pin for auxiliary power.
7 way RV flat blade tow vehicle side.
7 way RV flat blade trailer side.
05-09-2007, 06:11 PM #7
Hopefully thats all the wiring diagrams for different applications. Trailer, trailer brakes and vehicle. Although vehichle colours codes on vehicles can vary....Add on if ya got em. We appear to have lost original post about trailer wiring. Sorry for the inconveinence.
Last edited by Cableguy; 05-09-2007 at 06:29 PM.
05-09-2007, 06:24 PM #8
05-09-2007, 07:39 PM #9
Nice job cable guy. Now we don’t have to explain it ever again just post a link to this..
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94 GMC Burban, 5.7L (350), 4X4, Auto
86 GMC Burban, 350, 2 WD, Auto
79 GMC pickup plow truck, 400, Full time 4X4, Auto
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05-09-2007, 07:56 PM #10
Thanks Fiero. If you have something to add throw it in there. I can well imagine you've put a hitch or 2 on
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