May be the coil resistor on your headlight switch not getting a good connection , mine losses contact from time to time. Try turning your switch knob back n forth like you're dimming ur dash lights. You may have to remove the switch n clean the contacts.
It is located in the blower box . Follow your wire harness to where it plugs into the blower box or backtrack from your blower wire . the resistor is mounted by two screws.. cant send pic , I. Am at work
My k15 has a 350 granny gear 4sp glasspacs and stacks . I am adding random stuff to it all the time . pics will be added . I kno , "a gasser with stacks " sounds good tho.