My 58 s gas gage reads 1/3 full when full and won’t go higher. I checked and cleaned the terminals on gauge and cleaned terminals on sending unit. I ccheced ground on sending unit and even ran a temporary ground wire from sending unit to body ground. How to I test the gauge. Can I run a hot to one side and ground to other whine in dash to see if needle travels to right ( full side) or another method to rule out gauge before replacing sending unit? Thanks in advice. Everyone here with knowledge and experience is so kind to help us out here. Pete


The 1958 TRI-FECTA
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