Re: Electrical troubleshooting
FWIW:
For anyone looking under search for this title of Electrical Troubleshooting:
If your Model A headlights, cowl lights, brake lights, tail lights, and "trailer lights" on vintage trailers and/or modern trailers are "not" functioning:
From so many past experiences of light malfunctioning cases, in 99% of cases it is usually poor electrical grounds, e. g., electrical ground disruption caused by metal oxidation at metal electrical contact connections, excess paint at metal electrical contact connections, and/or loose connections at these same locations.
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