HELP 88 Cutlass Wiring Woes

[g0thiac]

Any idea where the factory locations are? Was able to find where the firewall connected to the head finally. Replaced it and my power issues are fixed but still want to replace the rest just to be safe.

Ground straps usually run from the valve covers, or off the intake to the firewall, at least from what I've seen.

It really doesn't matter where they are ran, it's more the strength of the connection.