On my old 89 and 92 Accord, both the outter lamps and the lamps mounted on the trunk would illuminate when the brakes were used. On my newer 99 Accord only the outter lamps function as brake lamps. I decided to change this so that the inner lamps on the trunk would light up with the other brake lamps. This project is still in the works and I have tried this on an extra lamp I had kicking around to illustrate. Let me know what you think.