Heated Seats?

I've seen the Moss kit for heated seats, but has anyone here messed with those? Seems like they might be nice on cool nights, but are they a complete "Miata Technologies" fire hazard?
::Drive2::

I'd like to think that they might be nice for my next trip Out West... in The Winter...

I find these are about as close to heated seats as I've ever needed ;)

I added two position heated seats to my 2004 MSM. It was relatively easy and they worked great. I did not use the Moss kit, I used a different kit that I found online that was $125 for both seats.

The hardest part of the entire process was finding a valid power source to run the heaters. Uncovering and recovering the seats was scary at first but turned out to be easier than I expected.

All-in-All a pretty easy project with a great result!