i installed my bal 1 or 2, can't remember, but it rocks. only thing is that i've not figured out how to change the pattern to a fast flash for the brake light. i've gotten to a place where i have like three flashes per second, speeding up every five seconds or so. guess i may have to tie into the white lead with the 12v + so i can adjust the light pattern manually, as the magnet is confusing at best for me. damm, those suckers are truly bright ass lights though.