Fixing a 2nd gen 3sgte harness / preping for my swap, no, its not going in Jenns car, its going in MINE! ;) Options

[presure2]

so yea,
as most of ya know, we recently did up a 3rd gen swap for jim and as "payment" he gave me his 2nd gen setup.
as most of ya also know, this setup was originally RJB23's car, which was pretty much a mess from the day jim and shannon bought it.
Click me for details of that story

so once we got the 2nd gen motor up here, it has been sitting on a stand, waiting its turn.
i finally got around to getting the harness off, and am starting to get it cleaned, stripped, repaired, rerouted, rewrapped, and reloomed.
like everything else about the swap in that car, this engine harness was no diffrent, and in defense to the guy who did it (IIRC DGperformace did it) it did work, it was just routed and wrapped all crazy, and the ECU end basicly looked like a birds nest from people troubleshooting the ecu and wiring while it was in the car.
so i started tearing into it, and dustin came by last night and helped me get the interior plugs sorted out, since there was lots of "dead" (wires that go to nowhere) wires in the harness.
i also removed all the stuff i wont need or use, including all the ac stuff, TVIS, TVSV, ect.
once that was done, i went about cleaning and fixing any loose or broken wires, (there were a few, one of which wouldnt allow the car to start with the key...lmao) and rerouting and rewrapping it, getting it ready to be reloomed.
here are a few pics of how that is going.

first, the before. sorry for the blurry pic, its the only one i took..lol



this wire was in the harness that was routed behind the intake manifold, instead of inside of it, like it should be, and chaffed on the IM until it broke..just so happens this is the wire that tells the starter to crank. yes, jim, this really is why your car wouldnt start with the key! lmao



how the ECU side of the harness looks now:



and some of the leftovers:


and just for refrence, a pic of what a stock USDM 3s harness looks like, for an idea of what this one should look like when its done.


ill keep updating this thread and adding pics as i go along and continue with the project.

[lagos]

But what about those two wires from the efi relay I posted about? Are they soldered into a Y or is just one of them connected? I'm dying to find out how yours was done, and its too cold out to go unwrap mine and check.

Luckily I decided against extending my harness, so all the factory shielding is still there.

Doing this harness from scratch made me really understand how some of these harnesses were hacked up. Not exactly that anything was done wrong or whatever, but that things could have been done differently. For example, in my harness I still have the male and female IG1 and IG2 plugs connected together and then the wiring to the 3rd ecu plug and interior plugs was ran from there. Why? Its WAY cleaner to just cut those plugs off and wire the interior and ecu plugs directly! Arrrg...

It really makes me want to pull out my own harness and clean it up.
I'll be adding a dedicated wire from the battery to the fuel pump soon. Looking at the supra wiring diagrams, that pump is on its own efi relay with a 30amp fuse, while ours shares its power from everything efi related, through a 15amp fuse and really thin wiring.