First of all, the battery light on. Just replaced alternator and battery. Checked with voltmeter at battery, fuse box and directly at alternator says 11.2 even with blower on high. Is this enough? I’m in Michigan and at 1 degree right now is that normal? Or is the alternator still bad?
Battery light on
The battery light being on indicates the battery is not being charged. Therefore this can be from a bad or faulty alternator. It can also be from a bad or faulty battery. And may also be from a bad connection between the two. You should see more than 12.5 volts.
First of all, I would start by checking the fuses in the circuit. The most likely fuse to be blown would be the Main Mult-Fuse #22 (120 AMP). Seems like this is the first to blow when the battery is jumped or cables touch when changing the battery. There are two other fuses, fuse#18 and #21. Consequently I would almost put money on FUSE #22 which is located in the UNDER-HOOD FUSE/RELAY BOX. Other than that, you would want to make certain all cables are connected correctly and free of corrosion.