I believe it's bob@bob-white.com.
He just posted several messages here...

Finn

Rogers, Bob J. wrote:

Does anyone know what happened to the guy who was making and offering for sale a set of pre-wired EC-2 cables to fit Tracy’s ignition/fuel controller for the rotary engine?  I tried to look him up on his previous web site (http://www.roblin-photo.com/) and found that the account had been suspended.  If the pre-wired cable is still available, it would be a great savings of time and effort to wire up the controller to the engine and aircraft. 

If you know the gentleman’s name and phone number (or a valid website URL), I would like to know it.  Hopefully, he is still making the cables.