Well I had the solid state master cutoff switches installed in my car instead of the old school cutoff switches. The solid state are remotely controlled from the driver's compartment and from outside of the car. After I got my car back I was having problems starting the car. I thought it might have been because we removed the safety restraint module out of the car. So, we put it back in and the car started a little better. I was at ECR this past weekend for a NASA event. I was able to start the car and pull it out of the trailer. However, after that I couldn't start the car without a jump. After I got a jump and the car was running the new Solid state master cut off switch caught fire. I grab what I thought was a halon fire extinguisher, it ended up being aquas fire extinguisher, and killed the power at the master inside the car. Go back to the trunk of the car where one of two solid state master control cutoff switches are on fire and tried to put it out. No good still on fire. So, I disconnect the battery while the fire is still going. I was lucky that the guy next to me had a halon fire extinguisher to put the fire out. So, does anybody use solid state cutoff switches? Have you had good luck with them? If so, what brand? If you don't or do like them and the reasons why? Sorry for all the questions. I want to know if I should remove the solid state cutoff switches and replace them with the old style switches which is what I wanted in the first place. I would be willing to keep the solid state if I was sure they were not going to catch fire again. Thanks in advance.