Engine harness writeup.
I am going to attempt to get this going now. Pictures will have to wait until I get my camera to work with my POS computer with the software loaded on it.
If you have a Supercharger then you might want to spend some time unhooking the TPS and IAC connectors and running them back up to the firewall area instead of making them run across the engine. I did this and it looks great. Just make sure you are careful not to cut any wires or anything like that.
Main step is to leave the existing harness in until you have identified each and every connector. Label the connectors and you will save a ton of time. This is what I did and so it helped a great deal. It also helps if you have a FSM to see the various connectors and where they are located in the engine and passenger side ECM area.
Disconnect the Battery. Obvious reasons.
You will need to jack the vehicle up on the Drivers side in order to get to the Transmission wiring harness side / coupler. I also replaced this AT wiring harness while there and would recommend to anyone that sees it as an opportunity since it is something you have to disconnect anyways.
Remove the Drivers side wheel as well as the starter. It will help get your hands into the area where the Park Neutral safety switch is as well as the other various connectors in the lower part of the engine. Saved me a bunch of time.
I also loosened the Power Steering reservoir from the engine so I could move it side to side while disconnecting the connectors below the intake manifold.
I then removed the supercharger intake only from the MAF to the TB. This gave me plenty of room to move the wiring harness out of the firewall.
You will want to loosen the "edit later" thing that wraps around the wiring harness by the firewall.
Remove the PCV valve assembly from its holder and remove the holder / mount itself.
Remove the Glove Box and passenger support bar for said glovebox and remove the screws that hold the ECM in place. Gently pull ECM out and remove appropriate connections. You will also have two main connections under the dash that will be easier if you go ahead and loosen the big washer do-hickey at the firewall from the outside.
You are now ready to start removing the connections. Be very careful on the Fuel injectors since they are fragile and you could break on of the retaining tabs like I did. It is fine now cause I ghetto fabed a wire tie to hold it in place until I replace them.
The trickiest part I had was getting the elbow out between the manifold body. Not much room to work there, but if you twist the wiring harness 45 degrees and push up from the bottom you will succeed. Expect a couple of scratches from that one on your hands.
To put the wiring harness in start at the top of the firwall where it bolts in and get it through the "edit" hose on top of the engine. Run the wires to the lower part of the engine down through the manifold body and sort them out on the bottom. You will need to turn the elbow to face the rear of the vehicle. You will also want to go ahead and run the wiring loom across the top of the engine where the fuel injector connects are. Once everything is layed out start at the firewall and get the ECM connectors and the rest through the firewall hole. There is a small white box connector looking thing right by the firewall on the harness that isn't used. Not sure what that is, but it wasn't used.
All in all it was pretty straight forward. Time consuming yes. It took me from the very start, ie running the wires for the TPS and IAC et cetera about 12 hours. I consider myself about a 2.25
PICS to follow of certain locations that were a PITA.
On the Transmission wiring harness everything was extemely easy except back at the Transfer case. The person that put those connectors in is an Evil Bastard. I must have cut myself 20 times for one connection back there.
Thanks
