I would replace it with a new one, I also have seen someone put a digital one mounted on the machine. I dont know if they did that to show actual hours or if it was easier.
I am not sure, I saw it on a TM that I looked at because the price was good. I am sure that someone on here would know or try searching for it. Sorry not too much help on that.
Interlink Supply or Hydro-Force or CRW distributors all have them available. However, before you replace one, check for a broken or intermitten wire. Bad electrical connection is one of the main reasons they stop working. Replacing a wire may be all that is required.
make darn sure you keep the old one for when you sell it later on. print out this post with the hours on it. keep them records
True dat. Scott W. is a great asset to this community. You may have to repair the wiring even if you buy a new one.