[exavid]

I think you'd still be able to work a bike throttle with finger and thumb action. A thumb throttle could be set up but might not have fine enough control. I have a neighbor who has a fused wrist, layed a tile floor in my house with me helping but I didn't notice his wrist action until a couple days into the job. It didn't affect him much. His wrist was shattered when working on a fire truck engine when someone shut the hood while he had his hand in the engine compartment back near the hinge. One thing that will help is the Goldwing's cruise control. It should be possible to reverse the throttle and clutch so you had a throttle and brake on the left with the clutch on the right. The brake and clutch shouldn't be hard to reverse mainly it's just the hoses and rewiring the switches. With a bit of ingenuity the throttle should be doable. After that it would just be the matter of getting used to it. A bit of practice should handle that. It wouldn't matter too much which switches were on which side.
One othe possibility I can see would be using a throttle boss which should give a pretty good range of motion using your fingers and the heel of your hand.

 

[exavid]

The clutch and brake master cylinders are totally different animals and not interchangeable.:shock:

There isn't all that much difference if you leave the masters where they are and just switch the hydraulic lines. The bore and stroke of them both are not that much different. The switches, brake light and clutch interlock and cruise interrupt would need a bit of modification but I can't see that being a major problem. I think the cruise interrupt on the clutch master is the only one that is normally closed. If one had to that could be reversed to normally open by means of a relay. It definitely would be worth a try, the main consideration would be in comparing how much fluid each master pumped per stroke. I really don't think it's that much different.