1. Disconnect the negative lead of the battery.
Options are remove the right side body work (a real pain) or work patiently from above and below to remove the ECU with the body work in place (less time and difficulty but you still need lots of patience)
2. Tools I used ( 1/4" socket drive, ext, 8mm socket, 4mm allen wrenches, lock grips, flashlight):
3. Top shot of the ECU which is forward on the left side of the bike, opposite the fuse/relay box. Note the mounting bolt nut at forward lower corner. There are two of these, another towards the back of the bike.
4. Socket and extension on the nut:
Both nuts were taken off with some difficulty as there is not much room to get to the allen head on the opposite side and hold it in some way while you are taking the nut off. The small vise grips were instrumental in this.
5. View of ECU from underneath after both bolts were removed:
6. View from top of ECU with one of the electronic connectors removed. Both connectors are on the top. Study them carefully with good light. There is a small plastic tab on the top of the connector you can push down with a small flat tip screw driver and then rotate the connector lock down towards that tab to release the connector:
7. View from below of the released electronic connector and the most forward mounting bolt - note the ground wire on that mounting bolt:
8. Here is a shot of the ECU out of the bike with the mounting bolts:
It took me 60 - 90 minutes once I decided how to attack.
