Pull the knobs off of the A/C control panel and you should find a couple of screws that hold the face plate on. Remove them and remove the face plate and then you can access the plate that has the two bulbs on it. You can do this without pulling the controller, but it is easier when it is out. To pull the controller you need to pop the radio out and then reach in through the radio hole and push the a/c controller out from behind. It should take two of the "grain of wheat" bulbs. Good luck Rule 308