I had an issue a while back, someone told me to after making the battery was good and connections were good , to turn key on and start wiggling, slightly shacking the wires to find my issue. about 15 minutes into it , fixing to throw my hands up in frustration, shock a wire and wah-la found it , re soldered connection. I would also check the switch in all this too. Just thinking out loud at 3 in the morning.
Ray