Okay,
The larger one you thought was green which is attached to the red goes to the alternator. Those will connect at the larger terminal on the starter. The "green" wire powers the alternator. It is always hot at the alt. So, you have the heavy gauge red from the battery to the larger terminal on the starter which is spliced to the "green" wire going to the alternator.
That makes sense to me.
The purple goes to the S terminal on the starter. It is the smaller one. That wire will only have power when you have the key in the start position. That is what actuates the starter to engage.
The wire which grounds to the engine block must come from the negative side of the battery. Is that correct?
Let me know.
Joe
Saturday, March 21st, 2020 AT 9:58 AM