Hi, Well if you saw the diy heated seat post than you saw it is not plug and play. If you do not have heated seats nothing is pre wired. If you decide to undertake the task go to the beginning of the thread and read it. There is also an entire retrofit kit you can buy including the switch, that contains the harness and all plugs you just have to route to the appopropiate places and plug them in. I do not think the coupe seats fit but I may be wrong.