i took my inst cluster out put tach in where clock was,horizon dash,72 velle,put back together now gas does not work.I took gauge out,cleaned up put back together,nothing still.Any tips,schematics,pics on how gauge is put together,please help.I heard 9 ohms is full tank,0 is empty,which wires do i put my ohm meter leads on?

This link any help? BTW it's 90 ohms on the sender when the tank is full.
http://www.chevelles.com/techref/ftecref18.html

Going from memory so may not be correct.
3 wires on back of gauge
pink - gauge power
black - ground
tan - sender input