Join Date: Nov 2008
Location: Kitchener Ontario
Small Update / ECU / Fuel Pump, ECU Fuse
Trouble shooting 101
Electrically, if the bike runs, the fuse for the ECU drives the ECU Relay, the ECU relay supplies power to the fuel pump relay and also drives the stick coils.
That is the end of the good news. The MK-1 was a hardwired display, the newer versions like the MK-3 are plug in socket.
All the information I have leads back to a bad frame ground or broken frame ground, since you say you have checked that, the next thing would be to pull the ECU and check the sockets. The ECU has 2 sections, one drives all the components needed to run the bike, stick coils, crank shaft pos. sensor etc., the lower section is the display, F1 indicator, tach,speedometer, etc. Since non of those lower section are working, it points to a bad ground, or you damaged the ECU adding the charger outlet, there is a warning about not working on the bike with the power on, how that relates to your problem is only a possibility that you had a static charge that damaged the ECU, having said that I am still leaning towards a bad ground/ bad connection.
From here on it gets difficult and expensive, it is possible the display is gone/ damaged, also possible the ECU is damaged. How any of this occurred by adding a charging outlet is beyond me, again, you are certain your wiring added is in parallel ??