Hi I'm new to this,my height vis and cruise control is not working. Checked the fuses all ok but still not working. Plugged a trailer in and it blew fuses changed all but the cruise control and high vis still not working. I have a Ford Fairmont Au Ti Futura. Any ideas thanks.

start by making sure All brake lights are working ?
- check stop globes - check brake switch is working with a test light
(power one side with ignition on brake released - and both sides with brake applied )
cruise won't work if stop lights don't ................