There is an interesting thread regarding ammeter vibrations, elsewhere in the Stovebolt. In order to not muddy that informative discussion I’ll start a new thread.
I am learning how to do all this stuff as I go. Further along the learning path than I was, but much more to go yet.
I am trying to complete the wiring on my ‘46 Chevy 1/2 Ton. It is being converted to a 12 volt, using a new wiring harness and keeping the generator. The generator has also been reworked to be compatible with a 12V system. The voltage regulator is a 12V Delco. I have added fuses as recommended: 30A at 10ga wire leading from starter to ammeter, 30A fuse at light switch, and 15A fuses at each the electric wipers, cig lighter, and turn signals.
The problem: The 30A fuse on the wire leading from the starter to the ammeter blows out immediately when the battery cables are attached. The previously working ammeter, per test, no longer registers at all. I prefer to keep the ammeter instead of changing to a volt meter, as some do otherwise.
I am uncertain where to go from here to troubleshoot this problem. Already checked and rechecked was all wiring for loose connections. The harness is new, as indicated, and there are no frayed wires. The voltage regulator was used, but functional, based on having used it for engine and brief driving test runs. However, none of the accessories or light switch were connected at that time.
I understand from the thread referenced above grounding the voltage regulator is necessary. I had previously assumed the regulator/firewall mounting bolts would suffice. I need a better understanding of where to add more grounding, the old Delco Shop Manual shows an external screw for use as a ground lug. The regulator I have doesn’t have one. Will adding a wire from one of the regular mounting bolts and the other to the generator bracket mounting bolt work?
Should insulting washers be used when mounting the ammeter to the gauge cluster? None were used, but in thinking through this problem I have wondered.
I understand the polarization of the generator is needed, as well. But, as indicated, that can’t happen with the fuse blowing as fast as it does.
Thanks.
