1978 Fj40 wiring harness routing | IH8MUD Forum Dec 03, 2013Start installation by laying out the harness on the floor next to the left side of the truck so that the fuse block is on the left. Pick the harness up and lay it in the floor board of the truck as far under the dash as you can. Find the drivers side headlight wires.FJ40 Wiring Diagrams | IH8MUD ForumMar 09, 2019BJ40 wiring harness schematic | IH8MUD ForumFeb 18, 2016Rewiring a 1970 FJ40 from scratch | IH8MUD ForumJan 18, 201477 FJ40 Wiring Harness: Rebuild? Replace? Give UpMay 31, 2013See more results Complete Wiring Harness Kit - coolcruisers Wiring Harness Kit - When the wiring gets too old to repair or you just want to do your FJ40 restoration right from the ground up, then the Painless wiring kit is your highest quality solution. This Painless Performance wiring kit is a complete kit and not a stripped down kit as offered by others.