mopower440, I doubt the switches go out from engine heat. Because of work I had to take a my vacation in late August instead of early June like usual. Going south thru St. George Utah, it was about 115 degrees and they were putting down new blacktop. The glue on my wife's right tennis shoe melted so I had to stop and get her new ones in St. George.(just for the record I have non cat stock pipe, and a Fulsac stage one Kit which ran perfect, with no pinging even under these conditions two up with lots of luggage.) The switches are just junk. I have posted about this before regarding my 1995 Heritage which originally had the larger switch. It lasted until 2007. Since then I am on my 4th newer version switch (mother harley paid for 3 of them). This last one seems okay.Luckily on the older non ABS Heritage you just install the switch and bleed the rear brake. No computer involved like when they did the recall on my 09. I didn't even want to do it, but I did only for legal reasons. I started to get uptight when I saw my mechanic hooking my bike up to computer and told him I had changed the original map. He said that what he was doing would have no effect on fuel map and he was correct for those of you who may be worried about that. I posted this info before ,( but under the wrong catagory so it got moved) just so other people would know. Just my 2 cents, but I think the switches are the problem and not the engine/exhaust heat. Sorry for the long post. CAHDBIKER