I know this has been discussed and I borrowed information from that thread. Unfortunately I didn’t snap any pictures but basically I wanted to install a switch so that I could turn it on in a parking lot but turn it off in my driveway. It cost me $50 all together not bad, $19 for a backup alarm $12?for a cheap fog light harness and $10 for split loom. Additional parts used were a soldering gun, tie wraps, electrical tape, 18’ 18/2 wire, a tester and a drill. I removed the spare tire and mounted the alarm into a predrilled hole on the frame in the corner using a 3/8” bolt and nut. Took the ten foot piece of splitloom and wrapped the whole thing with tape so it would be water proof. Shoved 12’ of 18/2 through the split loom crimped the connectors on the wire and attached it to the alarm. Pushed the stick through the frame pulled the slack out and tie wrapped it everywhere that I could. There’s a grommit to the left of the drivers seat that I cut an x in it and pushed all the slack in. I took a 6’ piece of 18/1 wire I had in a splitloom from a old harness and spliced it to the pink black wire coming off of the transmission it’s the third wire on the harness I used the continuity tester to find the proper wire. I ran the wire into the grommit as well. Had to remove the plastic foot well trim the carpet holder and fold the carpet over. I ran the wires in the grommit into the little cubby on the side of the dash behind the light switch. I cut a hole next to the hood release lever and installed the on off switch from the fog light harness there and ran the wires out to the cubby on the side of the dash. The harness has a harness with a plug for the switch which I connected, a ground connector that I connected behind the plastic footwell cover on a ground bolt that’s already there just took it out and slipped the ground connector between the bolt and the existing ground wire. Then there’s the hot leg with a fuse which your supposed to put on the battery but this is where I cut off the connector and soldered it to the reverse 18/1 wire that I ran off of the transmission harnesss so that the switch only gets power when I’m in reverse. Then the only wires left are what are supposed to power on your fogs I cut this harness and soldered on the wires going back to the horn, taped it up and all done. Coiled up all the slack neatly and shoved them in the hole after snapping in the relay into the harness. 08’s don’t have reverse power in the fuse box that’s why I had to tap it right off of the transmission.