no 4 ways, no blinkers, no tail lights? help

Ok, like it says, I have none of the above however the taillights light but when I apply the brakes nothing happens, dang near killed me by about getting rear ended. I blew a fuse wiring an amp, replaced the fuse and now this stuff is all gone. Checked all fuses and they are all good.

maybe you fried a relay

Maybe you blew up the bulbs. Are the bulbs intact? If you removed them, would they work in another truck, is what I'm saying.

bulbs are good. where would I look for the relay?

What year is your truck?

thank you guys, I found another thread and it was just a relay. whew