My guess would be that the wire "option" is for:
1) connected wire = Euro M42's (or M42's that are overseas which did not have the catalytic converter)
2) disconnected wire = US M42's (or M42's which are Stateside and MUST have a catalytic converter)
I'm also wondering if the Euro M42 DME is different, or more so, if it operates w/ different parameters and that is why the wire HAS to be connected on the other side of the pond....
I'm sure for those M42's on this side of the pond, with the wire needing to be disconnected, that the DME must operate most efficiently and properly based on that "disconnect" - and if that specific wire is erroneously connected, the DME then has to run in some sort of loop (or is it open loop) mode to keep the car running, maybe not as efficiently, but enough so that it does not stall or leave the driver completely stranded.
I'll have to check this wire on mine too, because I have no idea if it is connected or disconnected... (and how many M42 owners actually know about this wire or have ever even had the black plastic covering off of the main firewall harnesses)....
Just out of pure curiousity, for those that have "fixed" their M42's after disconnecting the wire, did any of you notice poor gas mileage or poor engine efficiency prior to finding the fix?
GREAT FIND - this NEEDS to be made into a STICKY for sure!
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Messages - Cobra Jet
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