Tail light issues

[93ramvert]

93 LX Vert with just over 17,000 miles and this:

I noticed last night my tail light (Parking lamps and license plate lamps) were out. The brake lights, turn signal's, and reverse light's work and the front parking lamps and instrument cluster lights are all good which would negate a blown fuse, plus I checked the fuse, and it's good.

Anyone have any clues.

The only thing I can possibly think off is I put some patio blocks in a tarp in the trunk for added weight for the snowy days, and maybe one of them damaged the wiring. I looked under the carpeting in the trunk and all seems to be good.

Help

[My Cobra]

have you checked the plugs where the bulbs plug in? in my buddies fox they rattled out just had to plug them back in and we checked all the fuses to do with brakes and replaced the bulbs while in there. maybe check this? good luck