So I am doing a racetronix install and the pump is installed and the wireing harness hooked up. The pump primes but my gas gauge doesn't work. I have taken the pump back out and redone the purple wires and still nothing. I am turning the key to prime the pump and the electrical and the needle just falls to zero.

What can I do to fix this. I have no more ideas considering the wireing is secure on the pump.

 

please I am at a total loss here