I've just got a leather interior & the seats are heated ,I need to get the switches and fit them but what about the wiring, is this already fitted in my existing loom as I can't find any information about this , can anyone help please? It's a 2016 mazda 2

 

Well I've fitted the seats and the switch turns out all the wires are in the loom ,even the fuse was installed all in all 4 hours to change complete interior