Christian, You are correct about the 3rd brake light unit that we have used on a few of the groups Deloreans. It is a GM unit from a late 90's Suburban. It is about 16" wide but only 1" tall and 2" deep, molded in black plastic with LED's all the way across the back. I normally mount these up under the top louver across the back. What I do is cut a slot thru the rib/support under the top louver in the same shape as a cross section thru the 3rd brake light. The rib/support is deep enough to allow this without cutting the rib apart. I position the light unit about 1" back from the back edge of the louver. The light is then slid thru the rib and installed "upside down," so to speak, with the bottom flat part of the light going up against the underneath flat part of the louver. The light ends up being "captured" or held in place by the rib and I also use a little bit of black RTV / silicone on the bottom of the light to glue the light to the louver as added security. The wires are then run under the upper louver forward up to the back of the T-panel and then hidden and run into the rear facia and tied into the brake light circuit. I normally put a male/female plug on the wires where they meet the T-panel so the louvers can be removed with the 3rd brake light attached without any problems. Like you said, the best part of this installation is the light just blends in with the louvers and is not noticeable, until you step on the brake pedal. I also like this unit because these lights themselves are much brighter then many aftermarket add on 3rd brake lights I've seen. We've had some guys swap out their existing 3rd light system for this setup just because of the brightness. You can see a photo of this installation in the DML / yahoogroups photos section under "3rd brake lights - Bruce Benson". Marty > I think it was Marty from the MidState club (Illinois) that had a 3rd > brake light that was tucked UNDER the top louver. You wouldn't notice it > until it lit up. He also said that you don't see it in your rear view > mirror. > > As I recall, it was a part from a GM truck or something. Marty, how did > you do it? > > Christian [Non-text portions of this message have been removed]