Wiring questions

[Tamra]

Hi everyone,

We have managed to get 13.5lbs off our OEM 2002 WRX wiring harness so far, and hoping for a bit more.

MikeB75 posted this photo on the forum a little while back regarding deleting the daytime running lights... just wanted to confirm that we can delete everything he did, and also that we are doing it right. The daytime running light relay (also known as the low beam relay, right?) is the black relay near the blue relay (high beam), correct - and it can be fully deleted along with associated wires? There's also a little diode off of it... delete it as well? Delete the silver box with "caution high temp" and the black DRL module, and then jumper the yellow/green to the yellow/red wire -right?




For the integraded unit, I found these two lists on the forum. Can anyone confirm if these are the same for a 2002 WRX, and which specific ones need to be jumpered?

Hi tmoretta the info that I can help you with is for a 2004 STI, but I'm working in a 2004 WRX wiring and the integrated unit is exacly the same... Blue Plug
1: (LR) K/L-02 (Keyless Entry Module?)
2: (WB) Battery Power Supply
3: Key Lock Solenoid
4: (B) Ground
5: (L) Room Light
6: (Or) Lock All Doors (Actuators)
7: (RG) Unlock Passenger Doors (Actuators)
8: (R) Unlock Driver Door (Actuator)
9: Shift Lock Solenoid
10: (L) FB-15 Rear Defogger Relay
11: (BL) Seatbelt Warning Light
12
13: (B) Ground
14
15
16

Gray Plug
1: (R) Rear Defogger Switch
2: (YB) Key Illumination Light
3: (BrR) Seatbelt Switch
4
5: Inhibitor Switch ("P" range)
6: "P" (Park) Range Switch
7: (Y) + All Passenger Door Switches
8: (LOr) + Drivers Door Switches
9: Stop (Brake?) Light Switch
10: Ignition Switch ACC
11: (YR) Lock/Unlock? Doors (Switch)
12: (RW) Lock/Unlock? Doors (Switch)
13: (OrW) Keyless Entry Control Module Pin 1
14: (OrB) Keyless Entry Control Module Pin 2
15: (V) Illumination
16: (GrR) Lighting Switch (V3)
17: (LW) Trunk Light
18: (L) Lighting Switch (V2)
19: (GR) Ignition Switch IG
20: (WR) Key Warning Switch

This was my initial summary for the plugs in a 2004 WRX:

B280 (Blue) - Integrated Module

1 LR Power/Keyless entry Delete
2 WB Power, Fuse 3 FB-33 ?
3
4 B Ground
5 L Room Light Delete
6 Or Door locks Delete
7 RG Door locks Delete
8 R Driver door lock Delete
9
10 L Rear Defog, ECM FB-15 Delete?
11 BL Seat Belt Light Delete
12
13 B Ground
14 OrW Lighting - various Keep portion?
15
16

B281 (Gray) - Integrated Module

1 R Rear Defog switch Delete
2 YB Key illum light Keep?
3 BrR Seat Belt Switch Delete
4 BrY Auto trans only? X
5
6
7 Y Keyless entry module/FR door switch Delete
8 L Or Driver door switch and light on cluster Delete
9
10
11 YR Driver door lock button, keyless entry Delete
12 RW Driver door lock button, keyless entry Delete
13 OrW Keyless entry module Delete
14 OrB Keyless entry module Delete
15 V Various lighting - power Keep portion?
16 GrR Lighting switch B71 Keep
17 LW Trunk light Delete
18 L Lighting switch B71 Keep
19 GR Power FB-20, Fuse 11 Keep
20 WR Key Warning Switch/Keyless entry Delete

Backlighting goes through the integrated unit. A simple workaround is to wire up an on/off switch that grounds the Orange/White wire to turn the lights on full brightness. More complicated is to create a simple pulse width dimmer that's controlled by the dimmer knob. It should only be about ten bucks worth of electronics parts.

So #14 orange white wire - wire directly into headlight power? What about #9 for brake lights?

What do the grey plug other lighting switches, #15,16,18 power? What about #10 and 19 relating to ignition?

Any others need to be kept/jumped?

I'm dieting my 2002 harness now and wanted to make sure I understood the consensus on the Integrated module. In order to delete it completely:

On B280: Ground pin 4 (Black)
On B281: Keep pin 16 (GrR) Lighting switch to B71
On B281: Keep pin 18 (L) Lighting switch to B71
On B281: Keep pin 19 (GR) Power to FB-20, Fuse
Delete all other wires

What do I do with the wires I keep? I'm deleting all the interior lighting but want to make sure I can illuminate the combination meter (dimmer not necessary). Would I need an on/off switch to ground on the two wires that run to B71? Can they be spliced to use the same on/off switch?

Jaime also, mentioned wiring an on/off switch to GND on the Orange/White (on B281 pin 13) wire but this wire runs to the keyless entry module, which I already deleted. Do I need to worry about this OrW wire?

Thanks for the help!

Also, is anyone deleting the DRL system?

STIPWRD posted the above but never got a response. I would like to know too - Anyone have an answer for us?


To confirm - this is the power window circuit breaker and can be deleted fully?



Any ideas what this one is? We deleted a wire from an unused connector and traced it back to this one, so guess it isn't necessary...?


So this looks like the HVAC relay to me, but there is one wire that doesn't match up with the wiring diagram. It looks green/yellow, and the diagram calls for green/orange. Can anyone confirm if this can be deleted?



This is what the car looks like right now, with a theoretically 49-13.5lb = 35.5lb harness. Only 7.5lbs more and it'll look just like an Iwire, right??? LOL