Yes your truck came as 6V. Gas gauge must either be 12V or has a reducer because it works. Same with heater and radio.
Do you have a generator and voltage regulator or an alternator?
Your previous test show you had 12V incoming and outgoing with switch dangling and NO BRACKET. So this time use 5A jumper as input, NOT ammeter, rig it like that one more time. dangling, no bkt. All outgoing wires permanently hooked up to switch.
Turn switch on and see if everything works and coil gets 12V. No meter measureing other than that.
you need to buy a 12V ice pick style volt tester.
Last edited by bartamos; 01/04/2025 12:04 AM. Reason: clarification
