Guy's been reading this forum for a while now and there is a lot of knowledge here (way more than I have!!). I haven't had any reason to post as my 2003 F150 S-Cab has been trouble free for 30,000 miles since I bought it. Over the last few days though the turn signals have started to act up. At first the left front would only work periodically, then they all stopped. The problem came and went for two days but now nothing works at all, turn signals or hazard lights. The flasher box does not seem to be getting power as there is no turn signal noise when the control is moved. Any ideas where I should start to get this figured? Thanks in advance for the help.

Mike

 

check the grounds

 

Get a wiring schematic and trace.....or throw a multifunction switch in(as thats problably whats wrong).

 

Are you one of the people who use the tilt wheel feature when you get in and out of the truck? If you are you need to look where the wiring flexes when the column moves for a broken wire.