I also have a wierd sound coming from inside

[hemiman]

I have a wierd sound coming from the dash of my truck.........when i push the brake pedal down it stops! i have a manual shift if that helps. sounds like internet dial up or something hell aint no tellin..... im gettin scared of this 6.0. it has 197,000 on it i guess if anything gonna go bad it would have already.

[redsoxguy]

that sounds like the problem Im having. does it stop when you turn on the directional or step on the brake? I tore apart the lower dash looking for the source of the sound.the flasher is behind there thats were the noise was coming from . after I took it out and looked up the part number online I found info on another site were someone replaced the flasher and the noise didnt stop. turns out it was a problem with turn signal/ headlight dimmer switch . I wish I had a way to confirm that is always what causes this problem I would like to change it myself but dont want to just be throwing parts at it if its something else