Rear Turn Signals and Flashers not Working?
 

Having problems with 99 XJ sport, my flasher's/rear turn signal's not working? Relay is new, turn signal switch is new, and bulbs are good?

Check the sockets for corrosion.

If your rear wheel wells and flares are rotted, check behind the left rear side cargo area panel to see if water has gotten into the wiring harness.

Check this out
 

I had sort of the same problem. But it was my tail lights and blinkers. Anyway, remove the drivers side lock panel and check the large connectors. In my xj, the p.o. had separated the connectors to clean the pins and broke off the clips that snap together to hold the two halfs of the connector together, one of my connectors had separated, and caused my wired lighting problem. So check your connectors. Might separate them, clean the dust and crud out of the pins, and put them back together. I used nylon tie zip straps to hold the connectors together. Hope this helps.

Thanks for the tip, It turned out to be condensation in both sockets. Easy fix with two new bulbs and some Battery Protector jell. Thanks again, Jeep on!