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I am no expert but the light in the picture looks to be a 69 unit and it highlights the difficulty in solely working from manuals . The RH side is similar to the drivers side but it is slightly different in that the mounting tab varies in a minor way. On the drivers side the tab is slightly bent (angled) but on the passenger side it is completely flat, like in Jeffs picture. Once you have the part, it becomes easy to pick the mounting hole under the dash as it is within reach of the wiring loom.Brad
That MPC is a real treasure trove, btw. Finding all kinds of handy part numbers in there :-)
Funny enough - the part I received from WCCC is actually the driver's side light like the NOS one I had, even though I ordered the passenger side one with that part number. It does work, though, and no broken tabs. I'm guessing places sell these lights interchangeably for both sides, as opposed to the specific part number for one side or the other.