The dash lights and the ac/heater control lights on my 2003 TJ X fail to illuminate. I checked all the fuses. When I rotate the knob on the blinker switch, I can dim the odometer and turn on the interior lights. It seems unlikely that both the dash and ac/heater bulbs would both be blown. But maybe? The check engine, airbag, blinker, gas, 4x4, high beam light work. Ideas? Thx!