Resistor wire
Cranky Old Guy
Joined: Mar 2008
Posts: 3,562
Likes: 6
From: Raphine, Virginia
The positive (+) terminal of the coil from the engine bay branches off to two places - BROWN, which is hot-in-START from the 'I' terminal of the solenoid, and the RED/GREEN resistor wire which is hot-in-RUN from the ignition switch. The RED/GREEN wire (where it's marked as a resistor wire) acts as the ballast for the coil when in RUN, the BROWN wire bypasses the ballast while the motor is turning over.
Have you checked the primary winding resistance of your coil yet? It's almost impossible to solve electrical issues without a multimeter. If your wiring checks out, the coil might be shorted internally.
Have you checked the primary winding resistance of your coil yet? It's almost impossible to solve electrical issues without a multimeter. If your wiring checks out, the coil might be shorted internally.
Mountain Pass
Joined: Aug 2002
Posts: 140
Likes: 5
From: Tucson
I've fuel injected my '79 Bronco and I had this resistor wire start smoking on me recently. Initially I thought it was a fusible link, but it's quite clearly the pink resistor wire that reads "RESISTOR DO NOT CUT." Since I'm running EDIS8 coil pack ignition and a computer, can I simply cut this resistor wire out completely and replace it with standard copper stranded wire?
Elder User
Joined: Sep 2014
Posts: 862
Likes: 7
From: like subarctic, brrr man!
I've fuel injected my '79 Bronco and I had this resistor wire start smoking on me recently. Initially I thought it was a fusible link, but it's quite clearly the pink resistor wire that reads "RESISTOR DO NOT CUT." Since I'm running EDIS8 coil pack ignition and a computer, can I simply cut this resistor wire out completely and replace it with standard copper stranded wire?
When I fuel Injected mine, I use a chrysler minivan wasted spark coil pack and the resistor wire smoked like yours. I had to dig out the wiring diagrams for the minivan and the coil did not use any resistor, wire or ballast. Then on the Starter Relay/Solenoid remove the "I" Terminal plug as it's not needed anymore.
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