I have a very low miles 66 Plymouth Belvedere that doesn't appear to have had the instrument cluster taken out before. I have no dash lights & when I roll the headlight switch to try to make them brighter, the only things lit up that get brighter are the red high beam light & both green blinker light indicators that shouldn't be on in the first place without either of the blinkers being on ???? I'm quite stumped & there appears to be no cut wiring behind the cluster. I have a spare headlight switch & get the same results with either switch. Anyone have any ideas on this ????