Hi all wired up my guage to the fuel tank when tank is empty guage reads full and when tank is full guage reads empty if i change the wires around on the guage will this solve the problem or will i get magic smoke:drunk:
you didn't say what this is in or what gauges you have, but it sounds like you have a mismatched gauge and transmitter. Ford and chevy type systems work opposite each other. It sounds like you have a Ford type gauge and a Chevy transmitter or vice versa.
If you are going to run that gauge , you need to change the sending unit.
Some senders read high resistance when full, some read low. If you have a high reading sender where a low is required, you end up with a reverse reading.
To check the gauge, pull the wire at the sender and ground it. If the gauge reads empty, then it needs a low resistance when empty and high when full.
If the gauge reads full,then it needs a low resistance when full and a high resistance when empty.
What gauge is it? Maybe we can narrow it down
What car/sending unit do you have?
From what I was reading about them, if you dont specify what sending unit you are using, dolphin sends the GM type 0-90 ohm unit 90 ohms full, 10 ohms or less at empty, which is backwards from what a ford unit will send.