On the car you got that doesn't start from the breathalyzer do you have the dash apart down to the power control module the thing with the big white wires just curious?
Almost I am thinking. I plan to go there in about an hour or two and pull the big white box Driver Side Junction Box. I think the wires behind I can't see aren't connected correctly or good connections.
Especially if they're digital lines which I think they are since going to CAN or ECU's is my guess. Reads like those are picky in regards to resistances and I wonder capacitance as well since I see pieces of the old wires present hanging though not looking like shorting from what I can tell. I might test the related relays too,