1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

bare wire in wiring harness

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Old 05-17-2014, 07:18 AM
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bare wire in wiring harness

I have a 1989 ford f150 , wiring was all messed up, does anyone know what the bare wire inside the wiring harness goes to ,,,it's by the distributor or runs inside the wiring harness by the distributor,,, cannot find it on any wiring diagrams
 
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Old 05-17-2014, 11:55 AM
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There is no "bare" wire in the harness. Something got hot and melted off the insulation. Follow the wire back until you find it with the insulation and tell us what color it is.
 
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Old 05-17-2014, 12:40 PM
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Bare wires are almost never good!
 
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Old 05-17-2014, 05:08 PM
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After tracking the wire back to the fuse panel ,stripping tape ,it is a ground wire that hooks to the body ,no melted wire, this wire is running with the distributor wires , my guess is it is a ground for the distributor, but I see no signs where it hooks up,3 wires running together. yellow w/green strip, black w/brown strip, solid blue, black and blue runs to the distributor plug , while yellow w/green runs to a block with a slid in connector or something, but no signs where this ground hooks to ,these wires were wrapped in paper like aluminum tape,also found a red wire with what looks to be a fuse block with black wire on the other side of block ,,only two wire I like before test to get running,,any ideals,,,,,but this is not a melted wire and it is a ground wire ,,,red wire with fuse I would almost guess it might be some kind of water temp gauge or something wire but I am not sure
 
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Old 05-17-2014, 05:41 PM
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by wiping down wires ,,, I see the red wire is not black on the other side of the fuse looking like thing ,,it's gray w/white stripe ,,any ideals ,,,and thanks so far for your answers
 
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Old 05-17-2014, 05:47 PM
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The wires are shielded in foil wrapping on purpose to avoid electromagnetic interference as well as from static electricity, these are the wires between the ignition module and the computer that runs your engine.

This pic may or may not exactly represent your configuration but it should give you at least a general idea:




These may help explain:

Ford Ranger Remote Mounted TFI Ignition Module
R-12 to R134 Conversion
 
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