I am running out of ideas fast. Symptoms are as follows; pac brake works like it should except that it will also come on when the brakes are applied and when the hazard lights are turned on. It actually cycles with the hazard lights. Here is the weird part. It won't come on with individual turn signals.
Right after I purchased the coach I added a light to the switch so that I wouldn't forget and leave the pac switch on. When I touch the brakes now the red light for the switch will light only about half of what is normal which tells me it is backfeeding somewhere.
The only modifications I have made has been converting all the exterior running lights to led. I did add additional led brake/turn and running lights in addition to switching the stock bulbs. My first thought was that I somehow attached a hot to a ground on one of the new lights, but I would think that it would happen on individual turn signals as well....right? I haven't had time to switch the led bulbs back to incandesant on the factory brake lights.
I am up for any ideas. The coach is a 99 Tourmaster on a Spartan chassis.