Just thought I'd post this in case anyone else out there has a medical condition known as "frozen @ss". There's going to be a lot of it going around in the next few months, I hear.
I was just at Canadian Tire and I happened to notice they have some heated seat cushions on sale. I remember how cozy heated seats in other people's fancier trucks could be at -40, so on a whim, I picked upht this one for $22.49 (regular price $34.99). It's on sale to the end of Thursday.
link to Canadian Tire product page
I put it on top of my seat in the parking lot and tried it out. It gets warm pretty fast. I'd say like in about 2-3 minutes or so. It has a control on the cord that plugs into your 12V lighter socket with a switch and 2 LEDS for the 2 different heat settings.
Overall, it seems to be pretty well-made, and for the price, you can't go wrong. It's good that it has the two different heat settings, because after about 10-15 minutes I found the "high" setting getting a little too warm. Once you get the initial chill out of your butt and back, the low setting is just right. Oh, and it warms your back, too, which is really good.
I think I'm going to put it on underneath my seatcover to help keep it from sliding around, and it will look better. Maybe I'll eventually wire it in permanently with a switch on the console, or something. A relay wired to the ignition would be good, too, since this thing doesn't have a timer on it and I think it would run down your battery pretty quick if you forgot to switch it off or unplug it.
This would also make a decent Christmas present for someone. Did I mention I could use another one for the passenger seat?