I've got an 06 Fat Boy and the break light works with the hand lever (front brake), but not the foot brake. Any suggestions where I should start to fix this. Thanks

 

There is a pressure switch on a T fitting in the the line after themaster cylinder.
You might start by checking that the connectors haven't been loosened or knocked off.
The next step would be to use an ohm meter to see if its tripping when the brake pedal is pressed.
It may have gone south on you.

 

Thanks Frank,

I see that you are a Vietnam Vet. What was you unit?

 

I started in the 1st Logistics Command, but somebodydecided that anyone who knew how to shoot well should be in a shooting outfit andtransferred my sorry butt to the173rd Airborne, and the 5th SF.