There is a battery "lug" on the firewall. On a 202 chassis, I'm not sure, but it should be on the right side, same as the battery. Probably easier to spot if it's on a lift. This should work for the red wires, both of them. Unsure where to put the relays, never done this. Why do they call the headlights "H4", this is the original bulb, a Halogen bulb.