Hello,
I've seen some posts saying it's possible and others that say there are resistors in the factory system and it won't work. I have an early 2004 Laramie. My driver's seat was mangled by an upholsterer and now the wiring is messed up. Got a set of Rostra heating elements. Can I just splice into the factory wiring and run the stock switch or do I need to fully re-wire the system. Passenger side is still stock and so is the back of the driver's seat.

Thanks!