temp guage not working I can ground it out and the hand will move but if I hook it up to the temp sending unit nothing

 

Time for a new sending unit?

 

I have put two in from autozone

 

That's the point here. Don't give us partial information. Give us the full story, not bits and pieces that we have to drag out of you. TELL US what you've already tried so we don't waste time suggesting things you've already done. Otherwise, you're just wasting everyone's time.

What kind of a car is this? Are you sure you're getting the correct sending unit? If it's a temperature gauge with a needle that moves as the temperature increases, that'll have a different sending unit than if it's just an on/off HOT light.

The fact that the gauge moves when you ground the wire at least indicates that the gauge itself apparently works and that the wiring between the sending unit and the gauge is intact. So this leads back to the sending unit as the problem.

Did the gauge work yesterday and suddenly stop working today? Or has it not worked for a long time and you're now trying to get it back to working condition?

 

you realize a GAGE sending unit differs from an ALERT LITE sending unit, right? Got PN's handy? How about a nice used working or new GM unit?

 

1969 hurst olds been off the road since 1991 rally gauges in it I rebuilt the motor used a manual guage to start the engine and drive it for about 500 miles decided to used the original guage