Fuel gauge issue 1977 c10

[ikiahslb7dmax]

Ok so my neighbor has a 1977 c10 chevy with a 1984 corvette engine and im helping him figure out his wiring for his fuel tank . It worked before he let the truck sit then I came around helped him get it running again I had to rewire the electric fuel pump to work it wasn't getting power . Now im trying to figure out what wire comes from the cluster to the fuel pump to get the gauge working again ik it works because I used a multi meter to test it. It reads 33 omhs which is about right what should I do should I cut the pink wire coming from the cluster and attach it too my purple wire coming from my pump

 

[Smtty58]

Did he wire in the fuel pump relay? Don't know if he used the Corvette harness, if so there is a single lead sticking out of the harness near the relay. Put 12 volts to this and the pump should come on.