1990, but I think I figured it out. See below:I'd defer to the FSM wiring diagrams over that online universal graphic. What year you need?
Spent literally all day in the garage with a buddy and a case of beer. When the harness didn’t match up the way I needed, we went through each sensor plug on the harness and wrote down the colors. The common colors were black/white and grey/red wires. From there, we turned on the ignition and found 5v at the black/white wires so we now knew what was what.
From there, I used the blue and yellow/green wires in the TFI harness as signal wires for the cam and crank signals and cut up the factory MAP harness to use the 5v VREF and ground wires for the sensors. I combined them into the TFI harness and stripped out what I didn’t need and ended up with a nice, tidy wire loom for my ignition inputs.
Unfortunately, my low mount coils weren’t even remotely close to fitting with the headers, so it’s time to look into plan B: mounting under the frame rail or plan C: mount on fire wall.
Here’s the pics of my finished wiring products:
I’m going to tuck the main engine harness up under the fire wall pinch weld when I get back out in the garage sometime.
So that’s where we are now. Wife is having labor symptoms so who knows when I’ll get to pick this back up. I got in trouble yesterday for staying out too long, but oh well, it was my last chance at a no-kids-garage-day for a while
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I've got 3 girls, girlfriend has 1 son, and she is knocked up with #5, due in June.
not after they cut the tubes!!