Im attaching a small led accessory light to come on when the door is open. Using a t tap connector, I attached the positive to each of the red wires (separately, testing each wire) of the dome light and the light comes on when the door is CLOSED (opposite of what I need) and when you open the door the light goes off. And of course the black wire of the led is to ground.

What am I doing wrong? I feel like its something simple