Need street legal parts for my 2010

[Finnyfire]

Hi guys. New to the forum and I hate begging first thing out but, I just bought my first gasser. Its a 2010 EC450. I love the bike but the previous owner stipped all the street legal stuff off for what ever reason. All that is left is the wire harness. I am looking for the following.

Tail light and blinker assembly
Master control switch
flasher solenoid (I Think)
Stock computer ( trail tech type)

I was hoping that since the harness is still there I could just wire stuff up.

Thank you for any help.