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

Misc Wire 86

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Old Oct 18, 2020 | 07:33 PM
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Misc Wire 86

Can somebody identify this wire and plug coming from the firewall of an 86 California bronco? 4.9 I6 carbureted. It runs alone the side of the EEC-IV plug in.
 
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Old Oct 18, 2020 | 10:15 PM
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Originally Posted by Dcurre1
Can somebody identify this wire and plug coming from the firewall of an 86 California bronco? 4.9 I6 carbureted. It runs alone the side of the EEC-IV plug in.

If you mean the grey plug pictured below with the black test connector, the grey plug is the self-test input trigger.




 
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Old Oct 18, 2020 | 11:37 PM
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Old Oct 18, 2020 | 11:39 PM
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That’s the main wire harness and there’s a plug that goes up towards the center dash. The truck runs fine without it but I want to make sure before I cut out all the loose old wires.
 
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Old Oct 19, 2020 | 12:40 AM
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Originally Posted by Dcurre1
That’s the main wire harness and there’s a plug that goes up towards the center dash. The truck runs fine without it but I want to make sure before I cut out all the loose old wires.
With out tracing wire diagrams or following them to their termination no way to know. When pulling the EEC harness out cut the ECU plug off open the harness about 6" inside the engine compartment and start pulling out cut wires work down the harness till you have all the cut wires removed from the engine. You can then rewrap whats left.
 
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