Even if the parking light terminal isn't on with the headlights, you could just pull power from the downstream terminal of the circuit breaker on the switch, which would always be hot unless the circuit breaker trips. But even better would be on the battery side of the circuit breaker with a separate fuse to your fog lamp switch. I would use a lighted switch (lit when the switch is turned on) as an indicator that your fog lamp is on.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.