Hey guys just installed my hurst roll control and i cant get it to work. The brakes work but when you press the switch and hold it it wont keep the brakes engaged. Also you cant here the solenoid working when the car isn't running when you push the button. I wired it from the battery to the switch, from the switch to the solenoid, and from the solenoid to a ground. I didn't put the fuse in or the light that comes with it. Any ideas whats wrong?