Rear Heated Seat Wiring Snipped

Repairs with my 2005 ex taxi Skoda superb started with the rear heated seats not working.

Dug deeper and found that previously someone decided to snip the wires and join them and do all sorts to make sure that they don't work, rather than simply disconnecting something like the plugs or switches.

at the seat plug there is no 12v but there is 12v at the switches, both plugs look fine.  

I was wondering if anyone has an idea of what wires are for what?

or anyone know what exactly joins to what to resolve the issue?

I've attached some pictures from the nearside rear footwell to show the issue as its a tricky one to explain. 

any help is greatly appreciated, thanks in advance!

cheers,