69 valiant electrical gremlin turn signal and license plate light

I used the light tester on fusebox and it never put up.

Two or three fuses get power only when the key is in Run or Accessory.

Two fuses are connected to the power all of the time.

One fuse only gets power when the parking lights are on.

Unlike inside a building, the fusebox is not the main distribution center.
Power to run things gets distributed from the junction drawn as a big black circle. (That's a welded splice.)
In my '67, the brake lights, dome light, and parking lights all share the same fuse.
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from the '69 service manual, "Battery Feed" is the power from the main splice. The main splice is connected to the battery so this wire always has power.
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Accessory feed Q2A is from the key switch. It only has power when the key is in run or accessory positions.
"Tail Light" is again a shorthand. I followed that wire on the diagram and it goes to the headlight switch B2 terminal. So that fuse is for all parking lights.

Here's what it looks like in real life.
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(in this case the one in my '67 Barracuda so some small differences from '69).