Good Evening,
I picked up a 1972 G7S a few weeks back and trying to awaken it from its slumber. Electrically, I have cleaned all the connections and have everything working off a brand new battery except the headlamp.
I read in an older post (Sacha's) that the headlamp circuit is powered by the magneto, and not the battery (similar to a DT). I have a rectifier, and no voltage regulator that I can find. The headlamp is intact.
If that is the case, I will finish cleaning the gas tank, oil tank (shall I flush it with mineral spirits?) and order a carb kit and get this running. It has good compression and spark, so will sort the fuel side out.
Thank you!