So, both my heated seats don't work. The fuse is good, the switches light up, and when I turn them on, I can hear a click under each seat. I'm thinking that either the thermostat is burnt out, a wire is broken, or the heating pad itself is shot. Space is tight under the seats, so I want to take them out and give the undersides a thorough inspection. What is the best way to go about doing this?? Is there anything else I should check before I attempt this?