check it out... this is on an '06 harley edition.

was considering putting a switch here, but its already wired for something..

 

I have the same thing. No idea. Would love to know.

 

anyone?

bump for friday night crowd...

 

found this picture online, but cannot make out the far left button...

 

Some of these trucks were 2wd that button you see might be for traction control.

 

that was the only thing that came to mind.

i guess it could be pre-wired on all of them that way...

 

here we go, stumbled across this pic from member AvionicsAllstar.

must be what ford had in mind, just not sure why its plugged into nothing in my HD or why the cig lighter moves to the middle when TCS is added.

but to the best of my knowledge that is what is must be...