Getting photos up, will add more text tomorrow.

Remove seats. Each seat is held in by 4 bolts, 15mm.  The drivers seat has a power connector underneath and the passenger has the airbag sensor connector under it.  The seat belt is held on with a #50 torx.  It doesn't have to be removed to do the install but this makes it simpler. 

I partiall removed the seat covers. 
Seat backs:
The back was the easiest.  Unzip both zippers to the top, then pull the flap to the side until it detaches from the bottom clip.  Pull back the side that doesn't have the release knob.  When separating the velcrow strips, keep a finger pressed agains the velcrow on the seat to prevent it from separating.  Pull the cover up and over the top.  Install the heated seat kit as below in the photos.  Pull the cover back over and work the velcrow back into the groves as you lower the cover.  Tuck the heated seat cable to the side of the seat that is closest to the center of the car.   When you are ready to zip tie the cable below the seat, make sure the seat is full released forward and then secure the cable.  (if not, you will damage the cable the next time you move the seat back forward)

Seat Bottoms:
If you have seat adjuster






Place pad on seat (not the iPad) and draw where to cut for the seat cover velcrow

Place on hard surface

Use a ruler to mark the edge as to where to stop cutting

Mark both sides

Use ruler as straight edge

Cut carefully on both sides of marked line

Cut out section, I left about a half inch to the side element

Done cutting

Test fit on car and route cable

Peel off adhesive layer.  (one set didn't come with it so I had to spray glue on)

Zip tie on relay

removed center console lower section.

Next two are passenger seat photos


Passenger seat side piece held in with plug

Relay on passenger seat bottom

Drilled two holes with 3/4 hole saw

Routed wires beneath radio


Finished product

Thanks for the picts Joe, but it just convinces me that I should should wait for the mod meet where I'll have some expert and needed support....I really do like where the switches are mounted in your install.

sunnygator

Joe, didn't you have to drill into the actual dash panel behind where you mounted the switches?  Mine was solid behind the snapin panel and we had to drill there as well.  3rd and 2nd picture from the end. The panel behind the panel with the switches.

6:1, half dozen:the other

I just did a little weight reduction mod to Critter's car while I was at it with the install

im wondering why did u cut the slits in the pad? did this affect the pad at all or is it cuttable?

Concur with 2KWK4U!

According to the engrish directions, the best I can tell is that those stickers (mine were perforated in strips, Critter's were not) are intended to act as insulators in hog ring-type seats.  You're supposed to wrap the metal rods in them and they are supposed to prevent those rods from wearing holes in the heating elements and shorting out.

There's a grounding bolt on top of the transmission tunnel between the seats, under the center armrest.  You can just use that.

Thanks for the excellent write up and pictures Joe.  My heat pads just arrived today.  We're supposed to have 50 degrees here on LI this weekend.  It might be a good time to put them in.  I'm going to try to do the saggy seat fix at the same time using JPM's directions.

I copied all of your pictures and instruction to a dedicated web page and added some comments that I read from other posts about this topic. 

http://www.cherod.com/solstice/HowTos/HeatedSeats.htm

I had a question about the switch location. I thought it might be more convenient to have the switches mounted closer to the passenger and the driver.  I was thinking of mounting them on sides of the shifter tunnel as show in this picture.



From the pictures, it looks like there  might be enough clearance to mount the switches somewhere along these sides.  What do you think?

Odiaz, Looked at your page on the seats.  Nice.  If you look at the second to last photo, there is a black wire at the bottom right with a blue crimp connector barely showing.  That is the location to ground them.  You can take off your center console and see the stud sticking up.  Also, each seat comes with a in-line 10a fuse so I soldered the power wires together keeping those fuses and then soldered them to a 20a fuse tap.