Will is stay on without the key in the ignition? But everything else wired?Basically, that light tells you the alternator is charging. It will stay on if the key is on but the car not running. It should go off after the car starts. If not, then there is an issue with the regulator or charging circuit.
"Are the two large cables on the lug of the solenoid closest to the battery?" I don't get this question. Sorry. I have the main power cable from the starter to the large lug that gets constant voltage, and the other smaller cable from the starter to the opposite battery lug. I think the solenoid is bad. Any good recommendation for replacement?Are the two large cables on the lug of the solenoid closest to the battery?
If they are, and with nothing plugged onto the I and S terminals, the I terminal is live, the solenoid is bad.
That would make the alt light come on.
But ... having the two large cables on the other lug, and hooking the starter signal lug to the wire that went to the S terminal on the original solenoid, would make the alt light come on as well.