I basically have narrowed my issue to a wiring problem and now with my friends all data info I can check all of the wiring, what I am trying to rule are the basics as far as fuses/modules/elements...

Now all of my heated seats do not work at all bottom or back, now I find it really hard to believe that all 4elements/modules would go bad at once, and none of my fues are blown, from my previous backyard mechanic knowledge I would have to assume its a wiring issue somewhere, but what confuses me right is if I did have a short wouldnt I have a blwon fuse somewhere, or can you have short/wiring problem without blowing a fuse?

http://img405.imageshack.us/img405/1853/91443245jpgzl5.gif

These are the 2rear modules its where i'm starting my troubleshooting with my test light/volt meter, since it seems easy to to reach and tear apart compared to the front.

I would suspect an open circuit rather than a short.

I would suspect an open circuit rather than a short.

Electrical problems are exactly my strong area, I would assume an open circuit would cause a blown fuse, but none seem to be blown, basically too much talking going on now i'm just going to jump back there this weekend and check as much wiring as I can if not I guess its dealer time for $100/hr!!!!:rant2:

Electrical is not my strong point, but wouldn't a short blow a fuse and an open just interrupt current flow?

Electrical is not my strong point, but wouldn't a short blow a fuse and an open just interrupt current flow?

Yeah your making sense, but isnt a short basically and open live wire that grounded itself?

Lol w/e it is just some terminology I might have confused, either way no heat in my seats :mad:, thanks for all the guidance and help, this is definitely the best forum i've found so far for my new Deville very knowledgeable members...wish me luck this weekend when I try to tackly this problem, quick question does the rear portion of the rear seats remove pretty easily?

I believe an open is like a cut wire. A short is like touching a live wire to ground like you said.

Not sure how easy the rear portion removes. Never had to do it.

Actually the front modules are easier to get at than the rear. For the front, you just take a couple of nuts off and the entire bottom seat cushion lifts off. For the rear, you have to remove the back seat bottom, then the bolts that hold down the seat back, then the seatback itself.

I would find it hard to believe that all 4 would die simultaneously since they're fed from different circuits. They all might have died over time, though.

Jim

Would you think there would be a better chance of all 4 elements dying out over time compared to the modules themselves? I always thought modules last pretty long.

I didnt know the front seat bottom cushion is seperate from the back/reclining portion, so I dont have to take out the whole seat just the seat bottom upfront?

Would you think there would be a better chance of all 4 elements dying out over time compared to the modules themselves? I always thought modules last pretty long.

I didnt know the front seat bottom cushion is seperate from the back/reclining portion, so I dont have to take out the whole seat just the seat bottom upfront?

It's not likely the modules are bad. All the elements could be bad, though. The front seat bottom comes out very easily - it is separate from the back. If you look up under the front of it there's two studs with nuts on them. It's hinged in the back. Once the nuts are off you can lift it up and out.

Jim