W124 E320 lights not working.

[Das_Boost]

To quote the grinch “there's a light on this tree that won't light on one side.”
And that’s what’s going on with my 95 E320 wagon / estate. The passenger (right) side tail light & front corner marker light will not illuminate.

The specifics:
The flasher on front (same bulb as corner light) works. Brake light, reverse light, and turn signal on rear all work.

What I’ve done:
So I checked fuses and played around swapping them out for fresh ones & swapped fuse 3 & 8 for left side lights. And the symptoms remained the same.

I have cleaned all the fuse holders when I replaced all the fuses 6 months ago. I pulled the N7 relay today to check for corrosion and found none. But I cleaned all the terminals to be safe.

The warning buzzer, license plate lights, etc all work (all in same fuse circuit as right parking / tail light on fuse 3)
The bulb out indicator works, I confirmed this as I had a brake light out. This is how I noticed the lights weren’t working, but I’m not sure how long this has been going on as the car was parked for 9 months. I replaced that bulb, and the indicator warning light turned off.

Any help would be greatly appreciated in solving this...
All exterior bulbs are new (or brand new bulbs have been used to test). All fuses are 6 months old & tested. I’m at a loss on this one.

Thanks in advance.