1966 chevy c-10

[luvbowties]

Did you buy a 0-30ohm sender(correct)?...or a 0-60ohm sender(wrong)? If you got correct sender, pull up wire from sender going to gauge--lotsa times it is shorted to floor (as it runs below the sill mldgs. and under the floormat). To do a quick-check for this short, cut-and-replace that wire at end where it leaves tank AND at end where it enters gauge--all with one consecutive piece of new wire, leaving original wire 'loose at both ends'. If it works right, just "bury" this new wire. Gauge of 16 would be great!
Sam