Taillamp and headlamp comes on with key + lightswitch on a K2.  Engine running or not. It is possible kicking it over will put a small amount of current in.  Without a strong battery it just won't start easy or run well.

Battery voltage should be greater than 6.0 vdc key off.  Greater than 6.5 vdc engine idling  lights off. 

1969 CT90 K1
Last Edited By: DavenSeattle Jan 11 14 5:15 PM. Edited 3 times.