Join Date: Jun 2008
Location: Clifton, IL
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The resistor has absolutely nothing to do with your alternator.
The resistor is supposed to be in the +12v lead to your coil to cut it to 6v. It's a points thing. Basically, it will make your points last a hell of a lot longer. Do you need it? No, not really. I ran without one for 2 years, but I changed points 3 times. Without the resistor, you can gap your plugs to .040 or .045, which will be better for performance, but it's going to be a headache on the points. I would recommend using the resistor, and gapping you plugs to .030.
I would also check to make sure you don't have a resistor wire in the harness before you use it.
If you do have a resistor wire, get that garbage out of there. It's nothing but trouble. It gets hot, and it's bundled up with a bunch of wires you really don't want to burn.
The ballast resistor you have there is a much better option. Just screw it to the firewall, and run your wire to the + side of your coil through it before it gets to the coil.