Electrical Smoked the starter

So the typical way they are wired up is a 4 ga wire from the battery (+) to the battery side of the inner fender solenoid, a 4 ga wire from the battery side of the inner fender solenoid to the battery side of the solenoid on the mini starter. Then a 12 or 10 ga wire from the starter side of the inner fender solenoid down to the mini starter an connected to the smaller stud or some may have a male spade connection.

Your alternator feed wire should either go on the battery side of the inner fender solenoid or the 12V+ side of the battery if its under the hood. If its under the hood then use 4 ga wire and a 140amp fuse like a Bussmann stud mount style.

With all of that said, if you put the alternator feed wire on the starter side of the inner fender solenoid it would keep the solenoid on the starter engaged when the engine was running which is no bueno.

Take it back under warranty. When they ask what happened just shrug your shoulders and tell them parts can be bad out of the box.