I'm looking to do the same installation.
Does the constant 12V power actually stay on beyond a few minutes of the car being shut off? I was under the impression the whole fuse-box powers off after a few minutes.
BMW 135i AW Convertible . Steptronic . Business sat nav . Procede v5 . DCI . Custom quad pipe . Hartge rear diffusor . GPThunder angels . iCarbon mirrors
Mitsubishi CT9A Evolution GTA . TD06-20G turbo . Ti exhaust . ARC Airbox . Race Headers . ATP dump . Hybrid BOV . 100cel cat . Blitz SBC EBC . Leather Recaros . RL Coilovers . W/line Swaybar . Carbing Bracing . Hertz splits . JL W7 . 18" DTM rims + semi's