Change electronic throttle on 2010 R29

I have a 2010 R29 with the 6BY 260 engine and an electronic shifter/throttle. The old Teleflex unit has failed and replacement parts are no longer available. I am going to try to install new controls from Ultraflex and their manuals indicate that they will work with 6BY 260 engine and ECU. First I will have to remove the old system before installing the new one. The problem I have is that the entire wiring harness runs through the module of the old control (part # i8150P). Some of the wiring likely just passes through but it would be good to know this before reconnecting the ECU. Also, engine gauges receive their information through this part and I will need a way to supply this information to the helm. Does anyone have any experience with changing out the Teleflex system? I would really like a wiring diagram for this setup but Yanmar does seem to have one and no luck with the factory either. any help finding a wiring diagram with wire color codes would be much appreciated.

Further discussion.
I did replace the controls with an Ultraflex system. Shops in the area were not willing to work on this conversion so I personally wired in the conversion. Shifting was straight forward but communication with the ECU for throttle control was not. The ECU must be changed from digital to analog mode which must be done manually (not with a computer). Then you must cut into the original harness to connect to the ECU if your boat does not have a prewired connection which mine did not. If you do this you should call Rick at Salty Boys 541-993-6210 in Bremerton WA as he is probably your only hope.