SYS on display and speedometer and odometer stopped working

[ZuggZR1]

Today out of the blue the 1990 ZR1 threw the SYS error on the display and the Speedometer just said 0, as well as the odometer, did not work as well. The engine started to run higher than normal almost like a choke was stuck on and then would also run rough almost stalling. Any suggestions would be greatly appreciated.

Video of codes here https://www.dropbox.com/s/f3izumgdvl...sults.mp4?dl=0