I'm not sure your gauge or sender are bad. If you are using the original 6v Gauge and Sending Unit you need to install a Runtz resistor at the gauge to drop the 12v to 6v otherwise the gauge will only read 1/2 full when it's really Full...Ohms Law.

Mike B smile

Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD