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91 Power Transistor Wiring into 90

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LOLVTEC

10+ Year Contributor
286
0
Dec 1, 2011
Los Angeles, California
Hey I am a bit confused about the wiring. I don't want to mess anything up that's why I want to clarify things.

I have read this over and over again.
http://www.dsmtuners.com/forums/art...4-ecu-swap-into-1990-dsm-ignition-wiring.html

My question is the black/white wire coming from the 1990 coil pack needs to be spliced to the corresponding black/white wire from the 1991-1994 Power Transistor.
I have no clue what spliced means i thought i did but i'm not sure. i drew a little diagram.
from my understanding i the black/white wire from the Power Transistor needs to be tapped into the coil pack?

and also the white wire from the power transistor needs to be lengthened and replace pin #109 in the ecu. meaning that i need to cut the #109 wire that goes into the ecu and attach the white wire from the Power transistor. the wire i just cut from the ecu that was originally on #109 should just be tucked away right?
 

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The 90 coil pack has 4 wires if i remember and the 91-94s have 3. The one you mention should be joined with the similar wire going to the igition module. Either bridge them or connect all 4 together.

As for the #109 wire. You run the length and with a small jewelers screwdriver you can remove the pins with wire attached and attach a new pin to the new wire and reinstall it. Same with the 2 swapped wires use the small screw driver and swap pins without cutting wire harness just makes it a sloppy job. Perferably try to keep it factory looking professional and clean.
 
i don't think i need to connect all 4 wires. the pigtail for the coil pack isn't going to be touch except for the black/white wire.
 
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