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1G 91 Coil pack and Transistor wiring for 90 car

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4g63Powered

10+ Year Contributor
316
4
Jun 17, 2008
Bel Air, Maryland
Ok, I'm converting a 90 harness to work on 91+ equipment. I've read all the stickies/FAQs posted here, and I just need a quick sanity check.

Using 91+ pigtails on a cut 90 harness.

Coil:
1) Yellow/black
2) Yellow/green
3) Black/white

Transistor
1) Yellow/black
2) Yellow/red
3) Black
4) -empty-
5) White
6) Black/white
7) Yellow
8) Yellow/Green

My question is this: Obviously, I connect Coil 1 to Trans 1, and Coil 2 to Trans 8. Is Coil 3 connected to Trans 6? Or is it tee'd off? The pin-out in the tech guide shows the black/white wire to be +12V; if it just runs between them where is the voltage coming from?
 
Sorta answered your own question, didn't you? ;)

Both black with white stripe wires come from pin 3 on the MPI relay. That wire tees off to reach both the coil and the PTU.
 
Sorta answered your own question, didn't you? ;)

Both black with white stripe wires come from pin 3 on the MPI relay. That wire tees off to reach both the coil and the PTU.

I was close, but the bolded part was escaping me. THIS ONE, correct?
 
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