The Obbomed Retro-Fit Seat Heater – Driver Passenger Complete Set is the same system as a factory-installed seat heater. Highly flexible, coated elements are placed between the upholstery and seat cover without altering the shape of seat or back. Connected through 12V to vehicle’s electrical supply, the ready-made cable set includes, dashboard mountable switch and, integrated temperature sensors protect against overheating. Compatible with ANY vehicle seat with removable covers. INSTALLATION REQUIRED; ELECTRICAL EXPERIENCE NOT NECESSARY, BUT DOES HELP. 1-Year Warranty.