Unknown wire in engine bulkhead connector ???

[Anthony Fremont]

Could it be for a generator dummy light?

[lks dcvn]

Checked my harness(es) - and it doesn't exist on any of the 4 trucks that I have from this era...

To get to the bottom of it - you will have to trace it back inside the cab to be sure - there may not be an easy answer to this - it may just terminate the same way in the dash harness...

[Green Machine]

Thanks for the info guys - if anyone figures it out let me know. I think for now I am going to remove it and its big terminal end from the engine harness, there is hardly enough room to get the wiper hoses in there now. And I am using a repop plastic harness and it is smaller that the original.