BALLAST RESISTOR WIRE
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Joined: Apr 2009
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From: Stanley, VA
The wire is in the main wiring harness under the dash. It goes through the firewall and terminates at the plug for the "engine gauge feed harness". This is the harness that goes to the coil and the oil and temp sending units. It's a pink wire that has "resistor wire-do not cut or splice" printed on the insulation it's entire length.
In the pictures of my '73's harness, you can see the big insulated splice where the resistor wire ties into the wire that goes to the ignition switch. The last picture is the plug that's in the engine compartment.
In the pictures of my '73's harness, you can see the big insulated splice where the resistor wire ties into the wire that goes to the ignition switch. The last picture is the plug that's in the engine compartment.
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Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
There are other resistor wires in the harness that are used for the charge system/instrument cluster.
What year is your truck? The "pink" resistor wire was used on points and condenser ignitions. I think the color changed when they switched to Duraspark (green?) but not 100% sure on that one.
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Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
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