Hooking up a transmission temp guage to my new A440. It is a lighted guage. The green wire for the lighted guage needs to be hooked to a light in the dash, so I used the light in the cig lighter, since it is closest to where the guage is going to be. I hooked the green wire from the guage to the green wire behind the cig lighter. I chose the green one behind the cig lighter not because the color matched the one on the guage but because my I touched it with my test light and it dims along with the dash lights. Weird thing is that the guage lights come on and dim opposite the dash lights when I turn the dimmer switch. IE, when the dash is dim the guage is bright and when the guage is bright the dash is dim. I reversed the two wires that hook up to the bulb itself.. no change. I am sure it is something simple. What am I missing?