I don't believe there is a plug for power on the standard cars. We have used this company for installing heated seats into a car (non camaro) that did not originally have them. If you look at the parts page you can purchase a control module, wiring harness and switches without having to buy a whole heated seat kit, since you will have seats that have the heaters in them already. Go here for the parts page:
http://www.heatedseatkits.com/heated...rts/index.html
Their buttons look OE and come in dedicated driver and passenger.