I was hoping that this blog post was going to be about adding a seat warmer to a car. My 2011 Ford Escape didn't come with that option, and let's just say it's mightly cold on those leather seats in January!!!
Our former Professions section editor, Bob Bellinger, had heated seats in his Alfa Romeo. First and only time I experienced that uxury despite growing up in Michigan.
Anyway, you got to be a pretty bold hacker to start messing with your care electronics. Its a complex next of interrelated stuff. I had a Fiat in college and once one electrical subsystem went out there was a cascading set of problems that led to be junking it.