Hello and Welcome.
Maybe add your location to your profile, and you'll garner some local help.
The Service Manual PDF can be gotten from here.
http://valkyrienorway.com/download.htmlThen look for a paper copy somewhere.
I've scanned the pages from the IS manual for the radio controls, can email to you.

You can see the clear (darkened) cover on the right, there is a blue and yellow 30 more or less pin plug there. This comes from the radio under the seat. Just find the radio, follow the wires out of it, and insure they are all plugged in somewhere.