I've been working on a method to use the Russ Thomson button on the turn signal lever to change Hi/Lo Beams on the headlight and provide the Flash to Pass lights as well. The module utilizes a $13 CCA found on Amazon and three 12V relays. The current in the push button is the coil current on one of the relays so the low current requirement for the push button is met. The total cost of the parts is less than $50.
Here are some pictures and schematic. I have more information if you are interested, just PM me and give an email for sending the drawing.