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]

Always a manual. Its just a difference in how the 6th gen powers the starter relay, cor and ecu, vs how the alltrac does it.
On the stock 6th gen, both of those relays and ecu signal are just triggered/powered by the clutch start switch, because they are relatively low powered circuits.
However on the alltrac, you also have the the cold start injector, and time switch on that same starter circuit. So instead of using the clutch switch, the alltrac uses the same wire that goes to the the starter switch.

So what I think I need to do is wire it up so that i run brand new wire from the clutch start sw to trigger the starter relay, and send a starting signal to the ecu. This way the clutch switch is only triggering one relay and sending starting signal to the ecu. Then once the starter relay clicks, I need to Tee off a wire from the 6th gens starter switch wire, to send power back through the harness to the COR, Cold Start Injector, and Time switch. This would be kind of a hybrid way of how the alltrac and 6th gen cars deal with that circuit.

It seems like this would be a very simple thing to wire up, but if you really take a close look at both diagrams and see how the power runs through the harness, you'll see what I mean. I'm willing to bet that a lot of people just power the all of those things though the clutch switch 12v, and thats why a lot of swaps need some extra cranking to get started in the winter.

This post has been edited by lagos: Jan 10, 2009 - 3:08 AM