golf gti mk7 seats wiring connectors

[Jarvie.I]

I have fitted Golf gti mk7 seats in drivers and passengers positions.
I have been around googling and cant get an answer to the connectors. i believe the yellow one is for airbags- i dont need these wired.
i believe the 4 pin is either for heated seat OR sensors to detect person sitting to set off seatbelt warning
Could anyone advise on the 4 pins and functions of each pin.
I would be looking to hook up the heated seat function to a hard wired rocker switch twin function ( hi-low settings) via an ignition feed.
Pics atrached.
As always thanks in advance for help received.

 

[Jarvie.I]

pic of seats fitted. if your interested in the look, passengers is on swivel base.

 

[Jarvie.I]

So just had a recky under the seat. two wires from seatbelt (Brown and Purple) and two wires from what appears to be a heating element (brown and green) are presented via the 4 pin plug. Tested seatbelt using multimeter, short and then open when not in place/ in place. Also getting 480 ohms on element - seems a bit high to me. Will cha k against the drivers seat. pics of my findings.

 

[Jarvie.I]

So maybe this is nog a heating element and maybe the sensor reporting if the seat has a weight on it ie occupied or vacant. Further investigation needed. Amazing what pops into your head after a few beers and a discusdion.

 

[Jarvie.I]

confirmed that the wires are not for heater but seat occupied sensor- so no warm backside for me..