be forewarned, I am about to talk about wiring, which makes some faint like goats and others eyes roll back in their heads. but as a sparky tinkerer by birth and an electrical engineer by schooling I absolutely love this stuff. I will sprinkle in some mechanical stuff to keep people awake if they dont happen to share my particular bend.
most of the reason I love using the 98-03 s10 donor is because of the bussed electrical system that is very similar to what is still used, in fact the PCM is an 0411, similar to what all the LS swap guys will use. this makes it ideal, with the high pressure fuel system if you want to add an LQ/LM/LS motor its only a couple mounts and an interface harness between the motor and a tuned PCM, the gauges will all still work and everything will plug in. I dont have plans for a swap, but its nice that it can be done.
this is the mess that I will pare down for my simple truck, the engine harness is still on the engine, the rear harness is on the frame, so I need the body and dash harness today.
after taking out what isnt needed, this is what I am left with, a pared down body harness and complete dash harness.
I also dug out the correct column harness for my application, column shift automatic, key security.
I rummaged around and found the firewall cutout
which I duplicated on the upper firewall. kylie put the 47 GMC cutout lower, under the pedal box, which caused a lot of problems with wire routing, my plan is to mount as much in the same area as stock.
I had to plug up a hole, its dark under there so I forgot to touch up my overzealous cut but I will go back and fix it.
now just need to route the dash side, I may need to pull the pedal box to do it correctly, but I can already tell there will be almost nothing showing underneath, a big improvement. I am on the left side of the wiper arms too, so no interference problems.
I am ashamed to say how long this took. the S10 tank uses an oring and lock ring, you have to push down the pump with one hand and operate the lock ring with the other, but the o-ring it just a bit bigger than it needs to be. lots of pushing, grunting, swearing, and holding my tongue right and