Going to 318 out of frustration because of the die out? I rewired mine to get rid of the lean burn, largely because the original wiring was by far THE worst hack job I have ever seen on any other one vehicle in my life. It was so bad that I didn't think I could salvage the original harness, and am extremely surprised there was even a truck available for me to buy, I have no idea how this truck didn't burn to the ground before I ever found it sitting in the POs yard.
My truck is an 85, I went to the local junkyard and got an engine compartment wiring harness that happened to come from an 84 1 ton that had a 360. So I started with a harness lacking lean burn to begin with.
I untaped it all and checked the donor harness for chafed wiring and hard insulation from sheer age/ replaced a few sections. And extended a few leads to accommodate the /6.
While I was at it I incorporated an underhood fuse box from a square body ranger (90-93ish) and eliminated every fusible link in the original harness. I ran every circuit that used to be fusible linked to an appropriate maxi fuse. It wasn't hard to line up what gauge wire from the truck went where on the fuse box. I ran same gauge the same gauge on the fuse box and I have ea couple of spots left for future accessories.
I think all but 1 of the original fusible links were BBQ'd, and 2were also fried on the original harness
I also ran a redundant 10 ga to the hot lead on the alternator and thru the fuse box, the original setup had all the current from the alternator going thru a spade terminal in a connector by the firewall and regulator. Which I also left as stock.
I then hand drew a diagram showing what original fusible linked circuit now goes to what hole in the fuse box. My 85 D150 is staying a slant, u have a 74 225 on the stand almost ready to go in, upgraded with more power.
