Managed to get hold of the 'last piece' of an E90 PSS switch and trying to get hold of wiring daigram....(will post this thread or move it to the E90 as well)
I was inspired by this DIY article submitted by Colin Nicol. His Z8 switch is only to START and not to STOP..
Items bought from local bimmer agent: (Pics enclosed)
1. E90 PSS Switch
2. Single Line Connectors - 6 pcs
3. 16 guage wire
4. 30A/12 V 5 pin relay.
Total cost: BND 100.00 eq to USD 63.00
Anyone care to shove me in the right direction....? Would be ready to contribute to a DIY which has START/STOP option.