Thanks for those suggestions,deadmans switch seems ok,battery in good condition,servo on brake unit/tried pushing the smaller pushrod onto the microswitch,that works and the brake light goes off, however the problem is that the larger pushrod pulling the handbrake cable is on all the time.Looking at the large electrical unit under the armrest,the rocker switch for the handbrake, lights its telltale LED to go on but not its opposite LED to go off?