Flasher Units...
Led compatible flashers have a dedicated ground wire.
The turn signal flasher as you found is to the passenger side of the ashtra (The photo above is upside down)
From parts book, 2584 854
Tung-Sol 223
The emergency flasher is by the emergency brake.
Typically the emergency flasher is a different unit from the turn signal. More current passes thru it.
From parts book 2196 300
Tung-Sol 536
There is also a emergency flasher unit that is retangular.