Driver side rear running light not working

Hello all,

Hope you and yours are all well. I am hoping to gain some insight into non working driver side rear running light issue. I managed to obtain a wiring diagram for 2002 and found the broken wire for the rear license plate lights in the back door wiring bundle. There are other wires showing exposed copper but no other breaks yet. The wiring diagram for the 2002 shows the wire for the rear running light running along floor plate to the rear socket. So far unable to find a broken wire long the path. Anyone else have this issue? Am I looking in the right spot or could it be in the rear door bundle? Is the 99 wired different from the 2002? Fuses are good, brake light works, all other running lights work. If the wire is not in the rear door bundle, is there a common area where the wire could be damaged? It decided to quit on me two weeks before my daughters drivers test. Dad trying to fix 'her' runner. I will continue the search across the great interweb.

Thank you in advance.
WCC