[swiftryanswift]

Firstly, my apologies, this has been discussed a lot over the last 10 years and i've done a lot of research, however people haven't shared their trade secrets. Not all of them at least.

I have an 2010 E91 SE, which has heated seats but no IDrive, I've bought some M sport, heated, leather, electric, memory seats. I want to retrofit them which I understand is possible, but i need a little help. They are from a Pre-LCI car so i need to swap over the airbag headrests.

Starting with my drivers seat, the wiring pins i have available are 1,5,8 & 9. The new seat has K Can, so has 2,3,4,7,8 & 13.

My plan so far is to
- merge pins 8 & 13 on the donor seat and connect to pin 8 of the existing harness. This gives me a ground.
- Connect pin 7 on the donor seat to pin 9 on the existing harness. This should give me bolster power.

It's just what i do with the remaining wires that i get stuck with.
What do i need to do, in order to wire in the rest?
I've attached a wiring diagram to show what is left.
I'm based in Cheshire if anyone wants to come and help? However i would appreciate any advice.

The wires on my harness are 1 PWM Heat & 5 Ignition Plus Heat.
On the seat i have 2 & 3 for the K CAN and 4 for Seat Heat Module.

I could live without memory seats if that simplifies things? But need the seat heating functionality.

Thanks