I fired my 67 today. Car was running fine until I pulled the headlight switch. Car died, no power to any system. Quickly disconnected battery. Faulty headlight switch?? Gary
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Re: Faulty headlight switch
Gary, Unlikely.
If all power lost, it may be a corroded Red wire in the bulkhead connector, and the added load of the headlights caused a open in the main supply circuit to the entire car.
If so, the horn would still work. Does it? Horn relay buss terminals(big lugs on top) get power directly from the battery.
If not, it could be a Fusible link at the starter Bat+ terminal. This feeds horn relay buss as well as the bulkhead Red feed wire for main power.
Use a test light or voltmeter to check for 12v at the horn relay buss then at fuse panel outer fuse clips, some with key Off, some to Acc or Run.
Rich -
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Re: Faulty headlight switch
Rich, I cleaned the corroded contacts at the bulkhead, cleaned up, and re-wrapped engine and front light wiring harnesses, checked all grounds. I found the issue was the dimmer switch. It was caught up on the carpet grommet. Car now has all power restored. Thanks for the advice. GaryComment
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Re: Faulty headlight switch
Gary, Thanks for the follow up. Glad you're all set now.
I suspect your corroded contacts at the bulkhead were root cause for all power lost originally. The extra HL load exacerbated the marginal contacts. Also, a faulty dimmer switch would merely cause a headlamp fault. Even if the dimmer internal contacts shorted to the metal case, this wouldn't be a dead short to ground as the case isn't grounded. It mounts to the bare firewall with a nut plate.
RichComment
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