I've deliberately didnt mounted the horn in the factory spot , which is down on the firewall near the turbo as it would be subject to the heat coming off the turbo , its also far more practical where its mounted now for the harness plug and function , sound .
The harness plug was literally right next to where I mounted it , I found a hole that is already in the metal lip that runs accross the top of the engine bay, just run your finger along the lip under the plastic cover and use a step drill to carefully drill a hole in the plastic making sure not to touch the painted lip below , its under the plastic cover in the middle in front of the screen and covers the cabin filter which I've also installed as 850's didn't come with them.
Yes , I've converted the wipers to the S/C/V70 series wipers and now have drivers side (right hand) working perfectly in any rain event.
The caps are hideously expensive for genuine from suppliers ( $24 plus postage) so I've used a different manufacturers cap with an O ring inside to create a tight fit so it functional and looks original.
Yes , all blinkers flash as per factory with the fob , the smaller rectangle button operates the alarm , Stu from Voldat helped out with the setting up , I bought parts from overseas and Stu to complete the reqiured parts and install.
The good part is that on the 850 , the wiring harness is all plug and play ready to go , so as you get the parts , wiring up is very easy via ready to go plugs in the harness.
I'm a fussy old fossil , so now everything works in the cars entertainment as it should including the CD player , both stacker in boot & single player in dash.
I use a blue tooth cassette to connect my phone to the cars speaker system so I can use google maps and Waze as a good sat nav.
This has allowed me to keep the 850R as per factory original as possible both inside and outside the car