Updates:
Measurements for the drill holes in the plates. The plate needs to be 46.5cm long & 7.8cm wide. The holes are 12mm. Remember to do a plate one way and flip over to do the second plate the other way so you have a left and right hand plate.
Look at pictures on page 2 for countersink position, you will need a 20.5 hss countersink. Not enjoyable to do and a pillar drill helps a lot!
I have managed to fit an occupancy sensor from a standard E85 seat into the passenger seat base. Its a very tight fit but worked. No photos I'm afraid.
Part numbers for the electrics if you don't want to use parts from your old E85/6 seats:
2 x Heated seat plug 61138369713
4 x Spade pin for the above plug 61138364835
2 x Small pin for the above plug 61131393723
2 x Electric seat plug (for lordosis) 61138369715
4 x Spade pin for the above 61136901733
2 x Pretensioner plug 61138377143
1 x Occupancy Sensor plug 8369717 (cannot find this anywhere online)
2 x Yellow block harness connector 52108255704 (expensive new at £20 each, source second hand if possible.
Dean'o had some black E89 seats put in his Z4:
