I am planning to add after market heated seats to my 2014 Camry Hybrid. In the fuse box underneath the dash, there are 10A fuses installed for R and L heated seats. I would like to use those power sources for my seats since they will be shut down when the car is turned off. Does anyone know where I can connect into those two fuses for power? Is there a wire that comes off of the wiring harness? Does anyone know where I can get a copy of the electrical diagram?

 

Haynes manuals have wiring diagrams in them.
A lot cars come wired for just about every option available to the car. For instance, my car did not come from the factory with fog lights, but when I went to install my aftermarket kit, I find that the car has been pre-wired for it. I'm not sure about the heated seats but I wouldn't be surprised if the wires were already there.