Quote Originally Posted by BillBoost37 View Post
Ok, you've done the battery cables and looked under the boots for corrosion. Checked that the bolts into the battery snug down well. Upgraded a ground or two, cleaned the others. Changed battery and alt.
Yes. Yes. Yes. Yes.

Have you checked the connector at the alt? IIRC one of the wires going into the alt to the regulator causes the light to pop on based on grounding etc. Might be a short or break in that wire.
I'm assuming you mean the plug in the back? That controls when the alternator is charging or not? No, I haven't checked that. Like I mentioned, I am planning to install the diode to increase the charging voltage, so I will inspect those wires this week when I do that.