JALLEN4: Thanks for the info. Regarding the 3 year warranty thing.....having the JASPER installed, the shop told me "3 years" (I forget the mileage). Great, eh? Well not quite.
Reading the small print in the brochure, I came to "exceptions". Among them were "commercial vehicles" and "motorhomes". Therefore, according to JASPER, what I got was 18 months and the same amount of mileage.
While I'm typing this, I think I recall the mileage as something like 100,000..but do remember that for me, anyway, the amount of mileage would be impossible to make in 18 months.
Anyway, it has been 3 years now, and all is well.