1973 headlight wiring question

[Markos]

Susquehanna Motor Sports has a schematic of how to build a harness that will allow all 6 filaments to be lit on Hi beam.

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Susquehanna is a distributor for Hella products and a great place to do business with. No affiliation with them.

I’m a big fan of Susquehanna Motorsports also. Personally I think that Daniel Stern is a bit crotchety. At some point LED’s will exceed the capability
of his current “rant”. That has certainly been the case for high performance flashlights (firearm lights etc.) as well as off-road light bars.