[OverlandAdventureMike]

Bob thanks for the response.  I also found this diagram online.  It seems the bottom right of the schematic, the part in the square is addressing part of the wiring I am referring to, I just cant make much sense of it.

I have no background in electronics, but have done electrical work.  I have a soldering iron, etc.  It seems that someone worked on this before me, it looks like the yellow wire should be connected to the the very left terminal.  Hoping someone who understands schematics can help me make sense of it.