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OK I have a complete wiring harness out of a 92' TSI. I need to know which wires are needed and what ones are not. I will be using a simple push button start (no key). The car will have lights and blinkers on a totaly different harness.

One I do not need:
62 Purge control solenoid valve
53 EGR Control Solenoid Valve (90-93 CA only, 94 all)
65 Air conditioner relay
3 Turbo gauge
5 Power steering oil pressure switch
15 EGR temperature sensor (90-93 CA only, 94 all)
7 Air conditioner switch
11 ABS control unit (AWD, ABS only)

Do I need a MPI? Can I just have switches?

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Adam
93'FD Touring non-seq
05'WRX

What Stand alone are you running.

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Corey
90 C50 4G63 Swapped-Drag car
92 Eagle Talon Tsi AWD
96 Mitsu Eclipse GS-T
www.ongreenperformance.com
"Just like in the old days-More Horse Power means more crap to pick up-lol"

Its not a stand alone, it's a 92 TSI wiring harness and E-PROM ECU. I just want to simplify the whole thing.

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Adam
93'FD Touring non-seq
05'WRX

62- purge solenoid will throw a cel if unplugged, maybe put in a resistor?
53-EGR, just unplug it, or not use it at all... if the ecu was originally from CA, my guess is you'll have to desolder a jumper/resistor in the ecu...?
65- AC relay, in the garbage it goes
3- turbo gauge, see above? maybe?
5- PS switch, it's just a grounding switch, cut it and tape it, then forget about it...
15 - EGR, toss it in the bin, but ecu tweaking may be in order if from CA
7- toss
11 - sounds like a chassis harness part...

this should lead you in the right direction... i hope...

phil

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89 turbocan, 63t, GT30-13 (laaaag monster), tubular manifold by me, maf-Trans, phil-tuned ecu, bla bla bla.... you get the drift...

Not really worth it on a factory ECU some of those things piggy back and you could really open up a can of worms.

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Corey
90 C50 4G63 Swapped-Drag car
92 Eagle Talon Tsi AWD
96 Mitsu Eclipse GS-T
www.ongreenperformance.com
"Just like in the old days-More Horse Power means more crap to pick up-lol"

I don't have any of that shit plugged in on my 93 Colt, and error codes at all from the logger.

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Darin
1986 GMC 3/4 Ton 4x4 Diesel (soon to be Greasel)
1993 Colt GL

don't forget that you can use the boost gauge wire [at least with a tmo chip] to display other info [timing/o2 readings/etc]. you'd of course have to work in a stock dsm boost gauge somewhere, though.

are you asking so that you can eliminate the weight of the extra wires? that car better be pretty f'ing fast. g'luck.

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1g smic, 2.5" turboback, 1g exhaust cam, abs intake, 13g turbo, mbc, vdo boost gauge, greddy egt

yes Im trying to simplify things and lighten her up.

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Adam
93'FD Touring non-seq
05'WRX

I have all the electrical tape off and starting cutting out unneeded wires. The tape weighs quite a bit. I'm also going to reroute the wiring to clean her up.

Well I'm two weeks into this wiring harnes. I have a 92 TSi Engine harnes a 92 Summit 4g15 headlights/markers,rear tail lights and blinkers <-so I can still hazzard ppl AFTER i WOOP THEM:)
I had to take a few days brake thoe, I was going crazy. You guy would'nt belive how much unneeded wires are in these things.

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Adam
93'FD Touring non-seq
05'WRX

Quick question do I need a reed switch? I dont have a speedo. Does the ECU use the signal for something?

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Adam
93'FD Touring non-seq
05'WRX

You don't have a speedo?

It's built into the gauge cluster
Factory ecu uses it for something with the idle
EMS also uses it to determine speed/speed related things

Nope it will have just a tach and other vital guages.

So the ECU needs a reed signal from somewhere right?

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Adam
93'FD Touring non-seq
05'WRX

Interesting question. I don't think it "needs" it, I think it just plays some small part and won't be missed.

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