Seat wiring question

[Mark_T]

I just got some sport seats to replace my old standard ones and the new seats have more wires than the old ones. Both seats are power recline with manual sliders.

The connectors on my old seats have three pins and look like this:





And the new ones have five pins and an extra plug beside the blue seat belt plug (which I haven't swapped over yet) and look like this:





What is this extra wiring for...heated seats or something? Can I use whatever these wires connect to, or do I need extra switches or controls in the car?

Thanks!
Mark