Talilight/wirling problem

[Tesla530]

I was driving down the road the other day when my rear antilock brake light came on in the dash andd stayed on shortly after I noticed that both my turn signals stay on and don't flash when I turn them on. Then my right taillight and turn signal went out now all of my back lights are out the right turn signal dosn't work and left one dosn't flash all dash lights and other lights work fine but rear antilock warning light still stays on. I recently had a tailgate put on and some other bodywork down at the local vocational school I think someone may have knocked something loose anyone have any suggestions as to where I should start looking for the problem?

 

[Tesla530]

I replaced the flasher relay and the front signals work now however I still have no lights on the back any ideas?

 

[4x4junkie]

If you just had bodywork done back there, that's where I would start looking.