[mikevilla]

if someone can please help me i have a 64 corvette that i have instaled a auto meter gas gage in. it has the stock sender in it also. i am using a painless wiring harness and can not get the fuel system to read right. the problem the vette sending unit has 3 terminials on it one has a s ( i would think this is the sending terminal) one has a i ( dont know why) and one i guess would be the ground. i have wasted over 30 hr on this trying to wirer it different ways, if some one could help i would be gratfull. thanks

[docvette]

Doc here,

Are you talking about the TANK sending unit , or the DASH gauge?

On the DASH gauge:

S=SENDER

I=12 VOLTS SWITCHED

G=GROUND

I is NEVER used in a sender..you DO NOT want 12 volts immersed in 30 gallons of gasoline..

The Sender should be, Hard Ground, and Sender wire to the gauge.

Doc

[mikevilla]

can you make it clear to me what is a hard ground. thanks i have been going crazy with this

[docvette]

Doc here,

HARD ground..

Battery Neg to frame to device...

Or battery to device ground.

Things like a ground wire on a strip of metal under the dash are questionable as to bonding a good ground.

Doc