From the same site, what do we all think this is?
It's described as an ENGINE MANAGEMENT UNIT
Fits: Hinckley Thruxton, Hinckley Bonneville, America/Speedmaster. Can be programmed readily by you to be a tachometer, a gear indicator or a high road speed reminder. Looks like it would fit in the tank console maybe.
http://www.normanhyde.web.surftown.com/info.php?code=HBK118
