Rear lights positional function? (1 Viewer)

[GJCruiser]

Trying to get new to me 1973 FJ55 on road. Fighting PO miswires everywhere. Build thread coming. As I sort out, I notice first click of headlight switch lights all four lights in rear and I have no brake lights. I note a lot of solderless butt splices at driver's floorboard. Before I dig in, can someone tell me which lights are supposed to contain which function?

Thanks,

 

[GJCruiser]

Further investigation. All four bulbs are two element. Thats eight elements. Schematic shows two bulbs for tail and two bulbs for turn.

Thanks

 

[RocketCityCrzrs]

I know it is a headache and going to be miserable, but I would look at a wiring schematic for that truck and test each wire with a multi-meter. I had some similar issues with mine initially and just went through the painstaking process of elimination with them by metering them out.
One thing I did have lots of issues with was grounding. You may change the bulbs out and hit the screw holes with a wire wheel to make sure they are grounding properly

 

[J Mack]

can someone tell me which lights are supposed to contain which function?

 

[GJCruiser]

I can and will rewire each individual element if needed. What I don't know is which rear light function shoould appear in which position. Four bulbs/two elements each. My guess--each bulb contains a taillight, then for the other four elements, outward two elements are turn, inward two are stop? That's what I don't know.