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Ok so looking at this pic basically I have both the yellow and grey wires going to the big post on the back of the alt but I've left the green wire alone. The truck runs better than it ever has and my battery light is not on. However I tested my battery and alt, the battery tested bad but hasn't...

Could a broken "S" wire on my alt make my MAF have a low circuit input?

My ECM has been givin me issues so I'm in the market for a used one. My question is what all numbers on the ECM have to match? Here's a pic of mine.