Update: I got dragged in to a major work hole the last few weeks but managed to finally spend a weekend on the limo.
Since it's been determined that my existing engine harness is to be scrapped, I bought what I was told was a used OEM '94 replacement.
Attachment 9763
Last weekend I started cleaning it up and tearing it apart, and tagging all the plugs, etc
Attachment 9764
The problem came when I was checking out the PCM connectors and noticed a few wires that weren't listed in the Service manual.
Red PCM connector cavity one has yellow wire. This runs to a three wire connector. One of the other wires is listed as Distributor Reference Low Signal.
Attachment 9765
While we were trying to figure this out we noticed that the split plug for the coil were not present. They look like this on my current harness
Attachment 9766Attachment 9767
On the new harness the Blue PCM connector has two knock sensor signal wires on separate circuits one in cavity 22, and the other in cavity 21(which is not listed in the service manual).
The existing has the two knock seasons on a "Y" connection.
Also, Blk connector cavity 22 is empty. According to the service manual this should be a tan/wht wire for the TCC temp switch signal.
Based on the above, can anyone tell me what year this harness is actually from? The omission of the coil wires seems to be an indicator, no?
Thanks,
Cory
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