Absolutely!!! You want to keep the suspension off the ground at all times. You blow a tire, and your going for a ride you may never forget! Hey Don, I'm running a low pressure, brake pressure switch like in your picture. I'm giving it the heave ho! I have to really stand on the brake pedal to get the brake lights to come on. Model A's are so light, it doesn't take much line pressure to stop. Not having the brake lights come on really irratates me. I am changing over to a mechanical switch, that mounts to the floor pan.