Ground locations 73 Challenger A/T

[73Banana]

Hello, i have the laminated wiring diagram for my car. I found the ground for the headlight, side markers, etc. Am searching for the ground for the rear lights, rear side marker, etc. No luck, are there any diagrams/photos/shop manuals that physically show where all the grounds are for the car?
Thank you

 

[Challenger RTA]

There where some cars that had a ground come off the taillights and to the body. The taillights and side markers ground through the lamp housing. Nothing saying that you can't do that.

The sockets corroding where connecting to housing can be a problem for grounding.