1. Make a jumper wire from a battery source, not the ammeter, with a 12V 5A inline fuse. No switch involved.
2. Attach it one at a time to an "out" wire. Not several at once.
3. Start with gauges, then the coil to see 12V at positve coil terminal, then heater, then radio.
4. Do you have a fuse panel or any fuses? if so where are they located and what to the protect?
5. New harness? Part no?...... or old original wiring?....or previous owner bird nesting?
After you report findings, we can discuss adding a bypass circuit.
Of course be real carful not to touch the jumper to anything or a ground, just the wire being tested.
Last edited by bartamos; 01/03/2025 9:19 PM. Reason: clarification
