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]

I need some help figuring this out...

So, the way the whole starting system works on the Alltrac is very different from the way it works on a 6th gen car.
On the Alltrac the clutch start switch acts only as a switched GROUND for the starter relay coil.
On the 6th gen, the clutch start switch acts as a switched 12v line for the starter relay coil.
So since we are dealing with the same car, and the same fuse box, you can simply run a wire directly from the clutch start switch to the relay using IJ1 pin 17.
Simple enough, right?

Here is where it gets tricky.
On the 6th gen the "switch" part of the rely sends power through the fuse box, and directly into a single wire that goes to the starter.
The alltrac on the other hand sends that same wire not only to the starter, but also to the cold start injector, time switch circuit opening rely, and Ecu STA signal, and that wire is actually part of the main harness and does not go directly from the fuse box like it does on the 6th gen.

The 6th gen however uses the actual clutch switch, that then goes to the starter relay's coil, to send power to the COR and STA Ecu pin, and there does not seem to be a cold start injector (excuse my noobness).

So how would you go about wiring this up then. Would you take the starter wire thats part of the 3sgte harness (same wire that goes to eb1 pin 2) and Tee it off to the single wire that just goes to the starters switch, and then run a brand new wire from the clutch start sw IJ1 pin 17 directly to the starter relays coil and to the ecu STA pin ?

This would be the "alltrac way" of doing it, instead of having the coil part of the relay send voltage to the cold start injector, cor,etc...

This post has been edited by lagos: Jan 9, 2009 - 3:50 AM

[presure2]

I need some help figuring this out...

So, the way the whole starting system works on the Alltrac is very different from the way it works on a 6th gen car.
On the Alltrac the clutch start switch acts only as a switched GROUND for the starter relay coil.
On the 6th gen, the clutch start switch acts as a switched 12v line for the starter relay coil.
So since we are dealing with the same car, and the same fuse box, you can simply run a wire directly from the clutch start switch to the relay using IJ1 pin 17.
Simple enough, right?

Here is where it gets tricky.
On the 6th gen the "switch" part of the rely sends power through the fuse box, and directly into a single wire that goes to the starter.
The alltrac on the other hand sends that same wire not only to the starter, but also to the cold start injector, time switch circuit opening rely, and Ecu STA signal, and that wire is actually part of the main harness and does not go directly from the fuse box like it does on the 6th gen.

The 6th gen however uses the actual clutch switch, that then goes to the starter relay's coil, to send power to the COR and STA Ecu pin, and there does not seem to be a cold start injector (excuse my noobness).

So how would you go about wiring this up then. Would you take the starter wire thats part of the 3sgte harness (same wire that goes to eb1 pin 2) and Tee it off to the single wire that just goes to the starters switch, and then run a brand new wire from the clutch start sw IJ1 pin 17 directly to the starter relays coil and to the ecu STA pin ?

This would be the "alltrac way" of doing it, instead of having the coil part of the relay send voltage to the cold start injector, cor,etc...

in my harness we set it up to go from IJ1 pin 17 and taps into the pin 3 (solid black) from the COR.
and yes, we have no cold start injector. the ECU has cold start trims that adds the extra fuel.