Since the sending unit is a resistance, it doesn't make any difference what the voltage is. 30 ohm is 30 ohms as far as the rest of the circuit is concerned. Your good to go with one you found.
'38 Chevy 1-1/2 ton '49 Chevy 1/2 ton '54 Chevy 6400 2 ton '55.2 GMC 3/4 ton '56 GMC 1-ton
