if you put 12V to the gauge there is a good chance it's fried. - Just touched it to see if it would move -
Your description of what you've done is a bit confusing IE:

Double checked the OHM's from both gauges. - 10 empty, 70 full I believe on both did you mean sending units???? YES Meant sending units!


Jumped in the satellite gauge ( after voltage reducer, before gauge ) and it worked. Gauge or sending unit ??? Gauge and it worked

Plugged the wires back and ran a jumper wire from the outlet of the gauge to sender and it didnt work. confused - I tried to eliminate the gauge, then the wire to the sender by removing the 5v supply to the gauge first - with a new gauge ( satty) and jumped to the sending unit. - that worked. I then plugged the gause back in and removed the other side, the outlet of the gauge in the dash to eliminate the wire.
it didnt work.

THe gauge only goes up to 1/4 tank when its supposed to read full

Hope that helps!