Hey guys. I have a 2004 ranger with the 4.0 w/4x4. My dash 4hiand 4low lights don’t come on when I turn my ignition to the on position for the lightbulb test. And when the vehicle is running and I switch it to 4hithe light blinks on then off, if I put it in 4low the light stays on. Any ideas for some help? Thanks.