HELP!!! I have just wired my electric locker and it will not lock. It was locked when I wired it up and it unlocked when I switch it to "unlock". But when I switch it to "lock" the motor just buzzzzzzz, the shift fork does not move. I feel sure I have it wired correctly. I followed Karl Bellve's diagram using one DPDT switch. Can anyone help with this problem. I did a pirate search and found nothing.