If someone wonders (I did) if this is possible for Peugeot Boxer 244, I can tell now, it is possible.
At least for version with 2.2 HDi engine, LHD, year 2006. I bought 2006 Stilo's cruise stalk from crapyard, same as Alfa 147 stalk. I found The black connector near left fusebox and it had needed wires. I also found connector D160 and connected pins 1 and 6 together and then wired it to yellow wire of stalk.
New pins for black connector and D160 found from male and female connector like this
https://www.auto-ricambi.eu/waterproof-5-pin-connector-cover-5-sockets-rubber-bands-p17811/ . They were direct fit. Also pins inside stalk connector are same, so I removed white casing and stuck pins inside 5-pin waterproof connector, so I managed to to really neat connections. New brake light switch I had to buy also, as old had only two pins.
Only hard thing to do was hole to cover under steering wheel. I managed to **** up it quite good and it looks very bad. Maybe I need to buy another cover and try again.
But now it works and even the led on dash lights up. It didn't light up at first try, but after I turned power off and again on with cruise on, the light came alive.
Thanks for everyone, who has written guides, tips and schematics here!