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Old 08-14-2020, 03:46 PM   #19
rotorwrench
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Join Date: Jun 2010
Location: San Antonio, Texas
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Default Re: Not enough power??

Just run a heavier gauge wire straight from the battery to the horn. You may need an in line fuse on the wire to protect it. Ford connected it direct to the generator cut out but it would likely get less resistance in the line if it was connected direct to the battery. It should run OK with a 16 gauge wire but it wouldn't hurt to use a larger gauge. You can try it with a heavy gauge jumper set up and see if it turns better.

I wonder about the quality of some of these model A wiring harnesses some times. When the car is running, there may be a loose wire in the terminal box or under the instrument panel causing more of a resistance load than just the ignition system. High resistance with the ground path is just as bad. It doesn't take much for the system to get overloaded with only a 12 to 15-amp generator pulling the load.

Last edited by rotorwrench; 08-14-2020 at 03:54 PM.
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