94 22Re harness: cutting out the dead wood.

[Combat Chuck]

Scored me a wire harness from a 94 22RE Manual truck that I'm cleaning up as fodder for a (someday) motor upgrade.

Other than grabbing it from the yard, I haven't done anything to this thing, because I want a clear plan of exactly what I'm going to do before hand.

My goal is to make this into a complete unit I will run through my truck for the day of the 22RE upgrade, so everything's there right now, but there are a few things I don't want or need that deserve consideration.

What I want to keep:
-All the EFI gear and sensors
-All the lights (including the third light. I intend to keep that)
-All the gauge inputs
-Signal from Ign. to starter.
-Anything emissions related
-Power to interior fan
-Alternator circuit

What I want to cut out:
-A/C junk
-Interior lights*
-Radio power*
-lighter power*
- Power to Accessories in general

*power for these parts is already accommodated for in an expansion harness that I'm keeping.

Is there anything I'm missing that I should keep?
Is there anything I've listed that I shouldn't bother keeping?

 

[snobdds]

I don't know if you consider these under the EFI system, but you need them...

Cold Start injector time switch
Thermo sensor (for ECU)
Thermo sensor #2 (for the gague)
TPS

A few more on the top of my head.
ignition system
Switches for the transmission (runs off the main harness)
Alternator
I know the fuel injectors were the same from 85-87, 88, 89-95. So you will need fuel injectors from an 89+ truck.

I would also not do any "repinning" until you actually do the job.

 

[Combat Chuck]

I don't know if you consider these under the EFI system, but you need them...

Cold Start injector time switch
Thermo sensor (for ECU)
Thermo sensor #2 (for the gague)
TPS

A few more on the top of my head.
ignition system
Switches for the transmission (runs off the main harness)
Alternator
I know the fuel injectors were the same from 85-87, 88, 89-95. So you will need fuel injectors from an 89+ truck.

I would also not do any "repinning" until you actually do the job.

Ooh, yeah, I forgot about the CSI system. Hopefully that's still in the bunch.

What transmission switches? You mean like the backup light switch, or is there some emissions-related switch that tells the computer what gear it's in, like on the late 2F/3F?
I'm keeping my L52, which I don't think accommodates anything but the backup switch. I could breadboard something together, though...

 

[Sam Stewart]

Cut first, ask questions later!

Really though, I would wait until you actually get the 22RE before you start cutting. Inevitably, you will remove something you needed.

 

[snobdds]

Ooh, yeah, I forgot about the CSI system. Hopefully that's still in the bunch.

What transmission switches? You mean like the backup light switch, or is there some emissions-related switch that tells the computer what gear it's in, like on the late 2F/3F?
I'm keeping my L52, which I don't think accommodates anything but the backup switch. I could breadboard something together, though...

There's only two switches coming off the main harness for the transmission:

4x4 indicator light (Assuming you have one)
Reverse light switch

 

[Combat Chuck]

Cut first, ask questions later!

Really though, I would wait until you actually get the 22RE before you start cutting. Inevitably, you will remove something you needed.

I yanked this off a 22RE, and carefully bagged and tagged every end. I'm pretty sure it's all cool, but if I need anything in the future, it will still be there waiting for me to wave my soldering iron over it.
I truly appreciate the concern.

There's only two switches coming off the main harness for the transmission:

4x4 indicator light (Assuming you have one)
Reverse light switch

That's reassuring, thanks.

 

[NorCalBorn]

Cut first, ask questions later!

Really though, I would wait until you actually get the 22RE before you start cutting. Inevitably, you will remove something you needed.

Crap, beat me to saying it.