Follow the relay kit manufacture diagram, which just so happens to apply universally for any basic automotive 12v relay.
Terminal 85 (switch ground), connect this to any ground, original fuel pump ground, chassis ground, any will do.
Terminal 86 (relay switch), giving this wire battery power will turn the relay on. Usually people connect it to the original fuel pump power wire so that relay turns on at exact same time stock fuel pump wiring and relay would turn on the stock pump.
Terminal 30 (Battery power supply). Connect this to positive side of battery or some people already have large battery cables run for battery relocation and will connect it there.
Terminal 87 (power to fuel pump). Connect this to positive terminal on fuel pump to provide it with battery power when the relay turns on to bridge 30/87.
Run the fuel pump ground lead to a chassis ground to complete the circuit.
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