turn signals screwed up!!

[MUDDING B-3000]

ok so well with my head lights off all off my signals work but when i turn my head lights on only the right signal works an when i turn the left signal on it just stays on an wont shut off till i shut the head lights off.?? i dont understand an when i shut the truck off an turn it back on they would with the head lights on for like 5 mins then start doin the same thing? its screwed up

 

[Earl43P]

Check the bulbs.

I've seen parking light filament short to turn signal filament in the same bulb.

Could also have a corroded socket or corrosion in the square plug under the driver seat.

 

[RobbieD]

And also check the grounding wires.

 

[MUDDING B-3000]

ok i cant find anything wrong with that stuff but now when i signal left every light on the ass end of my truck flashes? its screwed up im losted

 

[Roadkill]

Done any electrical work (additions, mods, changed bulbs, etc)? Run through deep water or puddles fast (no it isn't cool, LOL)?

Do you have a Haynes or Chiltons book? They have fairly good electrical diagrams in them. Then all you can do is start tracing from the switch to each bulb. There must be a short somewhere, maybe the flasher relay?

 

[ItsA5Spd]

sounds like your multi-function switch (yeah, that's what Ford calls it) is going bad. IIRC, you have to pull the top part of the column off to replace it. Kind of a pain in the ass, but not too bad. If it's not the multi function switch, then if you have trailer light wiring that may be the problem because I kow one of my friends had that problem with his. the ground got corroded and made his lights all screwy. Good luck.

 

[Dddaviso7]

I'm having a similar problem. My rear blinkers both light up when I signal. So from behind it looks like my hazards are one, but the front is completely normal (when signaling).