Quote:
Originally Posted by 1972 X code 442
When I apply the brakes the headlights and dash board lights dim slightly. When I release the brakes the headlights and dash lights brighten up again. Has anyone experienced this and what was the fix? I'm thinking it's a voltage regulator internal problem. With the engine running and using a volt meter the voltage drops to about 12.5 volts when the headlights turn on and then goes right back up to 14.5 volts.
Help!!
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I had this happen once and it turned out to be corrosion on the terminals at the threaded post on the horn relay. Your problem could be corrosion in contacts almost anywhere. Check the terminal on the alternator, terminal on the horn relay, grounds for the headlights, grounds for the dash lights, etc. I'd also check the brushes in the alternator. I had
that problem with my 86.