the guy that sold me truck recently changed the switch... not that that means the switch is good but who knows. I'll try one and see if it makes a difference. And the other issue, the battery light stays on alllllllll the time very very dim even with the key out of the ignition. The batterys both tested fine on my D-TAC snap on tester. They are AGM batteries so no cell test on them. I replaced the alternator because I wanted the 145 amp instead of the 105 amp and still no change. Connectors all look good. hmmmm any other thoughts?