Strange wire
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Junior User
Joined: Apr 2004
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Strange wire
Morning, all!
I have an '86 F-250 6.9 that I recently purchased. The truck has suffered partially out of neglect and partially out of the PO installing aftermarket accessories.
I was up under the dash last night pulling out the CB harness that was left hooked up. What a mess! Anyway, while I was pulling, I was checking out the condition of the wires, looking for bare or crimped ones. I noticed one that looked out of place. Right up next to the fuse box, near the kick panel, there are a pair of bright red wires with light blue stripes on them that go into a plug (2 connector). On plug that connects to the first plug is a wire with the same color markings that loops back and completes a circuit between the two wires. (I know this might sound confusing. I wish I had a digital camera...).
The wire that loops appears to have gotten very hot at some point. I pulled the connector apart to inspect it. The plug and the connections appear to be factory, not aftermarket. When I tried to start the truck with the connector apart, I got lights but no action from the starter.
I tried to trace it, but it goes into a big bundle right up under the dash.
Does anyone have a wiring diagram for my year truck with the color codes so I can firgure this mystery out?
Thanks.
I have an '86 F-250 6.9 that I recently purchased. The truck has suffered partially out of neglect and partially out of the PO installing aftermarket accessories.
I was up under the dash last night pulling out the CB harness that was left hooked up. What a mess! Anyway, while I was pulling, I was checking out the condition of the wires, looking for bare or crimped ones. I noticed one that looked out of place. Right up next to the fuse box, near the kick panel, there are a pair of bright red wires with light blue stripes on them that go into a plug (2 connector). On plug that connects to the first plug is a wire with the same color markings that loops back and completes a circuit between the two wires. (I know this might sound confusing. I wish I had a digital camera...).
The wire that loops appears to have gotten very hot at some point. I pulled the connector apart to inspect it. The plug and the connections appear to be factory, not aftermarket. When I tried to start the truck with the connector apart, I got lights but no action from the starter.
I tried to trace it, but it goes into a big bundle right up under the dash.
Does anyone have a wiring diagram for my year truck with the color codes so I can firgure this mystery out?
Thanks.
Senior User
Joined: Mar 2006
Posts: 136
Likes: 0
From: Twin Cities, MN
Neutral saftety switch then. Power comes from the ignition switch pin ST, then goes to the stater relay on the fender. If it starts in a gear other then park or neutral, it got bypassed. There are the ignition switch, NSS, and relay on the diagram. Hope this helps.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
That connector would be hooked to the clutch interlock on a manual transmission.
I do believe the interlock for the automatic is on the transmission, but I do not know a lot about the automatic trucks.
I do believe the interlock for the automatic is on the transmission, but I do not know a lot about the automatic trucks.
Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
On standard trans truck you must press the clutch in to allow start, on auto's there is a jumper...that is what you have found. It must be there, the C6 auto will only start in park or nuetral via the trans PNP (park nuetral position) switch.
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