tried a second fuse panel with only motor engine connected to it ,and tied both negative battery terminals together ,but still get same result, i try i couple different things but no luck, so stood there and just stare at it for like 30 minutes ,and i think its ignition connection if we refer back to my ugly drawing ,i have a correction to make look at wire labeled 10 gauge wire this wire has a 40 amp 285 series circuit breaker 12 inches from add a battery switch ,ok now i have thunderbolt iv ignition,so the engine harness goes from dash to engine ,and at engine is connected with a plug and has 50 amp breaker ,i feel that the 10 gauge red (see drawing for wire labeled 10 gauge wire) wire should be eliminated,or need to get red engine harness wire to add a battery switch in same spot as 10 gauge or connect both to same location, also i checked wiring hookup to add a bat hooked up properly all thoughts welcome