List I made of needed connectors for a complete wiring harness

[redfogo]

Here is a list I made of needed connectors for a complete 818s wiring harness. I am looking to see if anyone has anything to add or correct me based on my understanding of what is needed to make the car run correctly. For a 2002-2003 harness

Note: Engine harness I didn't post since mostly everything on that harness is needed.
Note2: The red mark on the front harness is a "I am not sure if needed mark I am guessing we do?"

I am trying to make a complete list of what is needed for those who wish to slim down or DIY your harness. I am planning to identify each connector in a picture once I have some confirmed needed connections to help stream line identification of each connector.This should help people know what they can or can't delete. I already have the whole harness mapped out I just want to streamline with a more useful list.

457334573245731457304572945728457274572645725

[AZPete]

Though this is too late for me, but have you seen the thread of photos of the '06 connectors by Mechie3?

http://thefactoryfiveforum.com/showthread.php?11880-Wiring-Guide-06-WRX-Sedan-with-Auto-AC-HVAC

[STiPWRD]

I dieted my 02 harness, here are a few tips:

The "non-turbo engine model" chart is redundant if you're using the "turbo engine model" - pick one or the other

Add to your highlighted connectors:
F16, unless you're only running one radiator fan
F68 main fuse box
B250 flash memoery connector - needs to be jumpered in order to reflash ECU
i10, i11, i12 combination meter, these are needed if you're using the stock cluster

The fewer connectors the better
Consider removing bulkhead (intermediate) connectors that break up the harness:
F44, F45, F46 Bulkhead wiring harness
B61, B62 Front wiring harness
R1, R2, R3 bulkhead wiring harness
B97, B98, B99 rear wiring harness
R15, R57, R46, R67, R2, B98, R3, B99 fuel tank intermediate connectors

Remove:
R47, R68, R69 not needed unless you're reusing the stock emissions purge system
B279, the EGT sensor is only used for emissions and can be replaced by a 2.2kohm resistor
B280, B281 Integrated module is not needed

[Hindsight]

Consider removing bulkhead (intermediate) connectors that break up the harness

That's exactly what I'm in the process of doing. In a small car like the 818, I see no reason for the harness to not be one piece. The exception being the engine harness. I am making mine so the engine and transmission connectors (plus all supplemental gauges I have added) can still be disconnected. I'm using Metri-pack connectors for the gauges and transmission harness ends, and will re-use the stock harness connectors for the main engine harnesses.

I chose to keep the Body Integrated Control Unit because it gets involved with a lot of things like instrument cluster lighting, dimmer, etc.

[K3LAG]

I chose to keep the Body Integrated Control Unit because it gets involved with a lot of things like instrument cluster lighting, dimmer, etc.

I kept it as well.

[STiPWRD]

Here is a list of wires going into the integrated module from:
http://thefactoryfiveforum.com/showthread.php?13629-2002-WRX-harness-pictures-of-each-connector&p=183008&viewfull=1#post183008

From this you can conclude that nearly everything can be deleted. The integrated module controls the input from the dimmer switch on B71 (steering column) to the power applied to illuminate the cluster. You can replace this with a simple on/off switch to illuminate the cluster or wire a constant 12V to always have the cluster illuminated. I'm using the sti cluster so it is always illuminated by default off of the power supplied to it.

[K3LAG]

Yes, you can delete it if you choose to. However, I'm keeping door switches for foot well lights and the key illumination. I also like to be able to adjust the brightness of the dash since me and the other driver have different preferences for dash brightness. Plus, keeping those features just makes the car seem more finished to me. Besides, I'm a little obsessive in some ways. Having the dimmer control on the stalk and knowing that it didn't do anything would drive me crazy. All depends on what you want.

Larry