Well stage 1 for wiring is nearly complete. I've decided I am going to go back at the turbo timer harness here tonight and hook up the speedometer feature as I'll be putting in the reverse lights and have the trunk all torn apart anyway (ECU is in the back).
The problem was multifaceted as to why this car was a wiring nightmare.
1) The grounds were not consistent or even "grounded" some ground wires for different items were run to locations that wouldn't ground to the chassis.
2) The previous owner did not believe in soldering connections, using crimp connections, or even making a solid twist. It was a half of a twist to sometimes 2 twists for a connection with electrical tape holding it together.
3) Instead of cutting the wires to length, I think it was cut wire, then install, then cut more wire because it was short, and then install. For the boost gauge, it took 7 wires connected to ground the gauge and to run to the recall button to see max boost pressure.
4)Turbo timer power wiring was installed to the factory harness with a install harness, but then the auxiliary and 12v constant power hookups were routed back and also spliced into the ignition harness at the key cylinder. I wonder why this vehicle had 30amp ECU and ignition fuses instead of the factory 7.5amp...
5) The stereo wasn't "removed" it was stolen. The driver side rear glass is new Toyota without the "warning stereo will not work if removed sticker" that they all have, the driver side door class is scratched from a screwdriver, the molding is gouged, and there were glass bits all over in the vehicle. Thankfully the stereo wiring seemed intact for the most part as the previous previous owner must have done that and the speaker install (professional hookups to the factory wiring, just had to tap into the adapter harness for the new stereo.
6) Items "routed" through the rear bulkhead/firewall weren't threw a grommet and were chaffing against the exposed metal.
On to the pictures.
In the first two shots, we have the interior pre me getting started, except I have already moved the turbo timer and boost controller to where I want them. When I got the car the turbo timer was in the radio "hole" and the boost controller was in the glove box.
The wiring pulled out of the hole
Here is what I found when I traced the wires to the firewall.
This is what you use to fix this problem after you file the burr away that was behind the vacuum line (couldn't get a picture) and clean up the hole.
Installing the grommet.
How it should have been.
Mid wiring chaos.
This is how you setup a grounding solution for future use!
Mounting the Greddy bits into the single din holder.
Wiring completed
Interior completed
Interior completed 2.
I also took and remounted the left front foglight as zipties are not the proper way to deal with stripped screws, but a drill can fix those screws. Fixed a few blown fuses and took it out for a spin, car runs great! Now to check vitals and work on the list below.
Parts here left to install:
-94+ reverse lights
-valve cover gasket
-fuel filter
-oil change
-SS clutch line
-SS brake lines
-Synthetic brake fluid
Items still to fix:
-Speedometer wire from ECM to turbo timer
-License plate lights inoperable
-Driver side seat worn, need to figure how much I want to spend on covers
Items coming in the mail/need to pick up and install:
-Wheels possibly (waiting to hear back from the owner as to when to meet)
-Aluminum Radiator
-Radiator to pipe hoses
-Aerocatch hood pins
-Trans fluid