Definately, no one was mad at you. You are doing fine. We want to help.
I need to correct my comment:
1. If that is a fuse, then it's just a rebuilt/refurbished ammeter, NOT a conversion to a volt meter. The original had a fuse across those two terminals. They are both "OUT" to loads. They just fused the wire to the light switch. The lone terminal is voltage "IN".
Last edited by bartamos; 01/29/2025 9:15 PM. Reason: clarification