some f**d senders read 70-10 ohms with 70 being empty and 10 full. This is a problem if you have a GM gage because it is backards. I used a F**d mustang tank and modified the sender by inverting it. I also added some resistors in parallel with the sending wire to compensate for higher resistance. Seems to work but isn't very accurate below 1/4 tank due to the nature of the changes.


'53 chevy 3/4 ton