So i purchased a new winged oil pressure sender and gauge. Installed using the same wires that came off the mallory gauge which was working fine before. but when i turn the key the new gauge max's out. any ideas?
Disconnect wire at sender abd see if gauge returns to 0, Also check and see if it is wired correctly at back of gauge.
You DIDN'T use teflon tape to seal the sender did you? You need a good ground at the sender....no tape!
just needed the extra ground wire, works fine now. now the temp gauge i have to be worked out. Also the voltmeter pegs out at over 16vs even when connected straight to the battery.