My 1999 Jeep Laredo tail lights are out?

Those tail light assemblies are junk. The area that the bulb holder goes into will warp causing no contact at the 3 terminals that need to touch. Pull the lights and check where the bulb holders twist in for warping or test there for power and ground. You can get aftermarket lights at autozone or Internet but I don't know if they'd be any better than the originals.

I've never seen tail lights, back up lights, and stop lights on the same fused circuit. I would check the ground connection or the wiring connections to the rear light assemblies. If you have a trailer harness, check the point where it is connected to the wiring harness for corrosion and open circuits.

This sounds like it could be a fuse. You need to look in your owner's manual and find out if all of these lights are on the same circuit. IF they are, you probably blew a fuse. The fuse box is usually located under the driver's side dashboard..

Make sure you replace fuses with the same size fuse. Putting in a bigger fuse can cause damage to the electrical system.

first things first pull the lenses off and start looking for burnt marks charring or corrosion.check grounds,fuses,bulbs,then work you way up to the fuse box.a vlotage tester helps too