7 way plug problems

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May 1, 2012 | 01:29 AM

metriccar

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Joined: Mar 2012

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7 way plug problems

I have a 1991 Ford F250 where I'm trying to track down and replace bad wiring. I keep blowing the fusible link for the trailer running lights. I've replaced a lot of wiring, but I found more problems, at the back of the connector.

I took a look at the back of the connector where the wires go in, and started inspecting them, looking through them. I pulled a wire and it's like it fell off or something. I'm colorblind, but it looks red with a white stripe on it. There are "8" wires going into the 7 wire connector! I took apart the connector and yeah, some of these wires have like 2 strands still hangin on the connector. But I cannot find where this 8th wire went? There appears to be another red wire with a white stripe on it. I plan on taking apart and cleaning/repairing this connector.... but what's with this extra wire? Where does it go?

May 1, 2012 | 07:59 AM

jdadamsjr

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Joined: Oct 2002

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What I might consider doing is going to say a walmart and getting a new 7 pin connector ?
not expensive and bet they have instructions with it

then you don't have to clean the old either ! good luck

May 1, 2012 | 08:47 AM

senix

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Joined: Aug 2008

Posts: 37,370

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From: Frederick, MD

From the tech folder:

https://www.ford-trucks.com/forums/5...g-diagram.html

Yellow = Left turn
Green = Right turn
Brown = Tail/Marker
Blue = Trailer Brakes
Black = +12 volt source (ie breakaway battery charge)
Orange = Backup/Auxillary
White = Ground