Hey Steve, for what it's worth, I ran all my big wires for the light relay
and the horn relay under the body and up front, behind the bumper, behind the
headlight, up to that empty space next to the radiator (behind the grille).
I put all the relays into a plastic box (Radio Shack or hardware store) and
ran the wires to the lights/horn out of it.  A little sealant and it's good
to go.  No drilling of the body, except to bolt on the little box.

Bill Marshall
85 GL Tiico "Pandora's Box"
Aurora, IL