All the accessories on my ski are dead, the multi gauge, the vts and vts gauge and the buzzer. looking at the wiring diagrams, traced it down to a purple wire that comes outa the "smart box" in the electrical center. its supposed to have power when the lanyard is attached, it doesn't. ran a jumper wire to B+ and all my accessories started working. do i need a new smart box or could i be overlooking something stupid. thanks in advance