brake light wiring

Hi, I recently read a thread here talking about electrical wiring, and in the thread it said that the brake light wiring goes through the turn signal switch.

Is this telling me that there's only a single filament tail light in use? (Gen1)

(I never really look very closely a the wiring diagram I have buried somewhere in the garage.)

It's a good thing I'm an electrical guy, as it looks like I'll be doing a custom wiring job on all of it.

As explained, been that way on all cars since they started installing signals.  Chances are if you are having flakey brake lights, its in the turn signal switch.  There are a bunch of thin spring loaded reed like wire contacts set into plastic guide pins that make these connections Donivan described.  After 50 years, either the reeds wear out or the plastic becomes brittle or the pins break and they loosen up and bend out of shape.  Fix is to replace the turn signal switch, readily available.  Also the brake switch itself has a gasket between the housing and wafer with the contact pins, it dries out letting moisture and dirt in there to corrode the contacts, it can be repaired but a a new switch is available and easy to do, just did both the switch and the turn switch and now I have working signals and brake lights! Tail lights are dual filament good old #1157's

I'm replacing my turn signal switch today....and searched online for a '64 G10 wiring diagram but couldn't seem to find one....do you know of a downloadable version?
Thanks!

Thanks Digz....printed and filed!

That one's nice, the one in the paper shop manual isn't in color!