Tail light help please

It's been quite awhile since I've been on this forum and first on the chevy side I believe. Anyway we have a 99 2.4l Malibu and on the driver side rear the tail light isn't working. I've replaced the circuit board with a Dorman and neither 2 worked so I bought an AC Delco and that doesn't work so obviously my problem persists farther. Does anyone by chance have a diagram of the wiring from the tail to the front? Or have any suggestions. I will also say that it hasn't worked for a couple months but when inspection came around I replaced the board with the dorman and it luckily worked that day for inspection and then after didn't have like I said tried two other boards, so hope that helps you in helping me. :smile:

Just the taillight isn't working?

Have you checked for power on the brown wire?

Yes its only the light that comes on with the headlights that isn't working. And no I haven't tried the brown wire because I do not know any of the wiring with the car, I'll check it tomorrow morning and see what I come up with.

Alright, sorry for the delay, but anyway I checked and there is power at the brown wire and that is the only wire with power.