Okay, here is the big update. The seat heating portion is done, everything is tested and confirmed to be working, the harness has been built. I am awaiting an enclosure for the power board, and bugging my wife into letting me get a 3D printer so I can make my own enclosure, on top of that I am waiting on the elements for the passenger seat. I haven't done much on the AC side at all, mainly because I don't have a set of seats to experiment with, feel free to ship me a pair of front seats, black leather, if you want to donate to the cause.
Okay, I have been coy up this point of completing the project while trying to decide if this is something I want to monetize for the few people who want this functionality on their non-fancy trucks, like me. But I will be honest, if you can take all of this information I am about to present and do it yourself you deserve to do it without giving me any cash. So to that end here comes all the information of what I have used to accomplish this project.
Seat heater elements (In lieu of stock seats with heaters):
https://www.amazon.com/gp/product/B001L6HYQK/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
$28 per seat
Dash trim with seat heater or seat heat/AC buttons:
Ebay or your favorite GM parts supplier, can provide part numbers if need be
$100 or so
Switch Connectors:
http://www.mouser.com/ProductDetail/Molex/31068-1011/?qs=sGAEpiMZZMs7eK6h2EBtKuk1fUeupRrxcLsO5tRhpWs%3d
Less than $1 each
Pins (For about everything on this truck with small gauge wire, buy extras)
https://www.amazon.com/Automotive-Connectors-RECEPTACLE-CONTACT-pieces/dp/B00LVKB3S6/ref=sr_1_1?s=industrial&ie=UTF8&qid=1489871981&sr=1-1&keywords=928999-5
These can be found for cheaper elsewhere, do some looking, but lets say $10
Power board:
https://www.amazon.com/gp/product/B01N5VRZWF/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
$16
Controller, can't say enough great things about the guys who make this over in Russia. I am working on getting a discount to bring a bulk order over, check out www.cannylogic.com for more information:
http://www.ebay.com/itm/Automotive-Visual-Programmable-Logic-Controller-CANNY-7-/162358910401?hash=item25cd585dc1:g:jHAAAOSwVL1WC5Jd
$100
And of course various wire, crimpers, etc.
Wiring is simple. Use the upfitter manual but basically you are going to have these wires to hook up:
Controller:
Power (tied in with power and ground for the switches)
Ground
Lin 1 (Channel 9 to driver switch LIN)
Lin 2 (Channel 10 to pass switch LIN)
Channel 0 DO to Power board Signal 1 in
Channel 1 DO to Power board Signal 2 in
Channel 2 DO to Power board Signal 3 in
Channel 3 DO to Power board Signal 4 in
Power board to seats (both power and ground for elements will land on power board):
Channel 1 to Driver Heater Back
Channel 2 to Driver Heater Seat
Channel 3 to Pass Heater Back
Channel 4 to Pass Heater Seat
And then you are going to need the program in the picture I have attached. Don't worry, if you ask nice I could be inclined to email it to you. And I might even be convinced to sell a couple of these. The completed harness, controller and power board would run around $250, you would supply your own switches, and seat elements but I would make it in a way where all you would have to do is plug the switches in and tie in the 8 wires from the seat heater elements (Screw terminal, super easy).
Thanks for following along with this project the last couple of weeks and I will update you all when I start to tackle the seat AC.
