I added the relay to an existing screw that held on a.... well, I'm guessing it's a vacuum diaphram of some sort... I had to cut the electrical tape back 4-5 inches on the existing wire harness to get the resistance wire to reach over there, but I taped it back up. Cleaned up every connector on that main batt terminal, and added one for this. Grounded it out to that spot over on the left near the hinge on the firewall where there was already an existing ground strap.
If it weren't for the bright colors, and lack of grease/dirt, you'd swear it was original
Oh, small note, another downside to wiring it into the fuse box, is getting the wire through the firewall.

