Quote:
Originally Posted by Dobie Gillis
Understand, but there must have been something that prompted them to revert to 6v.
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In '57 Ford began using re-designed circuitry using variable resistance instead of bi-metal switching contacts creating heat which operated the gauges.
Fyi, the original dash gauge voltage regulators were not a resistor but a bi-metal switching / chopper type device that created an 'average' lower voltage output.
The old style gauge & senders are generally self-regulating and don't usually need voltage reducers. A side effect of the older senders is they created switching static in the electrical system and needed radio suppression capacitors, the silver cylinder on a black wire in the first photo. They were not needed with a resistance type sender. (photo two)