2005 Victory Vegas, Motor lost power when cruising about 65. I thought a plug went out, but the plugs seem fine. Running like on one cylinder but both are working but power is gone. not idling right either, it happend without any warning. Running good one second then loss of power all of a sudden.

It sounds like computer has put you bike into limp home mode or safety mode to protect the engine. What warning lights do you have if any come on? it sounds like a sensor has either malfunctioned or has done its job properly and picked up something wrong like, temp sensor, oxygen, oil pressure, mass air flow sensor etc. Either way when something is out of the norm form the sensor inputs to the bikes computer it will often limit the revs on the bike putting it into limp home mode to protect the engine.

I personally would be getting a mechanic to put it on a diagnostic machine. If the computer has caused the bike to go into limp mode, your mechanic will more than likely be able read a fault code from your computer to point you in the right direction as to the root cause of this fault.