I just bought an 85 iroc and it had a huge tach right above the radio. It looked abnoctious so i took it out but i couldnt figure out how to hoop up the stock one. I believe its a green wire coming fron my distributor. I took the guage out and there is nowhere to attach wires to. What should i attach that wire to?

 

there should be a clip that goes right into the distributor.

 

There should be a white wire maybe going to a filter on the firewall then to the negative of the coil.