Re: 2011 Yamaha 15 hp - Tiller handle to steering wheel conversion
that conversion would be uncommon on a motor that size. However many motors use the same basic frame. you may find that the parts from a 25 may fit.
I think that on that motor there is a hole in the front lift handle for the steering arm to bolt to. You could find someone with a slightly larger motor and look at theirs.
you would need to clamp the shift cable to the side of the motor and the throttle cable needs to go into the cowl and clamp to the block and attach to the throttle.
You might call Carolina Skiff, they sell more small center consoles than anyone.
John