hey guys i bought a hks type 0 turbo timer with the harness for it so its jsut plug and play, it light up and functions well but i wont stay on like its suppose to when i turn the car off, does anyone know why, i know i diddnt hook up the speed sensor wire cuz i heard i didnt need too could that be a issure ANY HELP WOULD BE HELPFUL, thx

 

BUmp