97 Ram 4x4 Ext Cab 360 V8. I turn the truck on and the headlights work fine, dim and high beam. I put it in gear and the headlights shut off and won't come back on, high beams will work. Instrument panel always stays lit fine. I check all fuses, they are good. What the heck is going on ? I gotta turn the truck off, open the door, and restart it to get the lights on, then they go off again when i drive off.