2001 Suburban heated seat conversion

I have a 2001 Suburban and I'm retrofitting it with leather heated seats from a 2004 Yukon. I have the seats in but I cant figure out how to wire up the seat heaters. I dont have the factory buttons from the Yukon just the seats and about 3 inches of the wiring harness underneath them. The front seats each have a harnes with about 20 wires in it, and the rear seats each have a harness with 6 wires in it. Each harness has a thick (about 12 gauge) orange and a black wire. I hooked these up to the orange and black coming from the floor that my factory 2001 seats plugged up to. Now all the power adjustments and lumbar works fine. But now I wanna figure out a way to hook up the heaters whether I have to buy a factory switch or if I can hook them up with toggle switches or buttons. If anyone has access to a 2004 yukon complete body wiring diagram, please share it.

You would be far better off removing the heating pads from the seats and installing aftermarket seat warmers. If you don't have the seat warmer module and switches from the other truck, you are wasting your time trying to make it work. It isn't just a matter of adding a switch or two. You would easily spend 4 times the money and time trying to make the factory stuff work. sparky

There are modules and a relay on the bottoms of each of the seats. All I need is switches and wiring(I hope). I think a good bit of the wiring on the front seats is because they also have the memory seat function, which I could care less about hooking up. I'd just like to at least see if I can try and figure out the wiring. I mean if I can get a car to start by remote I'm quite sure I can get a seat warmer to turn on with either a switch or a relay. Worst case: it will be too complicated for me to do without adding extra parts in which case I would just not worry about it. But on the other hand, maybe I just need a pulse, or a positive or a ground to trigger the module to turn on the seat warmer. So if anyone can help me with a wiring schematic on a truck's interior wiring with the heated seats, please help me out.

UPDATE: Ok, heres the latest I found out. The front seat heaters have a "brain" or computer under the seat. But this computer is controlled by another computer called the "driver's door module". These two computers communicate with each other via the GM databus. So I guess I can pretty much give up on trying to get them to work, because I have no databus on my truck nor do I have a drivers door madule. But as far as the rear seats go, there is no computer. Only a 9 pin relay and what looks like some kind od capacitor or resistor. Do you think its possible to wire up this relay to a switch and turn on the seats? Or should I give up on the back seats also??

The back seats also use a module under each seat. You would need the factory switch in the rear of the console to try and make them work. It would still be easier to go aftermarket.sparky

There is no modules under the rear seats, only a relay. If there is a module, it must be somewhere else, in the center console perhaps?

The module should be under the rear seat attached to the wires in the seat support. There is one for each rear seat and it has a 9 pin plug in it. You must have the factory switches to make them work though.sparky

Ok, it is a 9 pin module. It looks more like a relay than a module so thats why I was calling it a relay. So you think if I get factory switches, I could make them work?

That should work. The module needs a 15 amp battery power source on the orange wire, the brown wire is accessory power and the black wire is ground. Match the wires off the factory switch to the wires in cavity's B,H and G of the module. The black wire off the switch is ground. See if you can get a switch out of a wrecked vehicle w;ith the plug for the switch too. The switches are in the back of the center console.sparky