my f150 has turn signal problems. They're not coming on. I was wondering if anybody could help me out with this. I have checked the fuses they are all good. I don't know the location of the flasher. Please help.

Need to know what year and options, but I beat its in the fuse box. You can find it location in the manual if you still have it.

I have a similar problem with a 2004 F150 STX 4X4. Sometimes they work and sometimes they don't, doesn't matter if it's cold, warm, left or right. Indicator lights up but no flash. The dealer,"can't reproduce the problem". What year is yours?

Check on the fuse block . The block can be accessed by removal of the cover, which is on the left side of the dash. Mine is just above the emergency brake. you will find the flasher sticking out -upper left corner. I agree with the other post, a blown fuse or a bad ground somewhere. On my 95 F150 it was blue until I changed it to a heavy duty. Good luck, Carl