Open the sunglasses holder which will reveal 2 plastic covers. Carefully pry them open and remove the two phillips screws. Now you can pull down the overhead console which is held in by four clips. Pull towards you and down and it’ll easily pop out. Now, you will see the main connector for the console. Use a paper clip, alligator clips and a multi-meter to find power when accessory is on and check for ground on the overhead bolts or door striker.