front brake lights
First, there is no "front brake lights" on any vehicle produced in the known world.

Now, if you are asking about the brake light switch, on the front lever (RH side), then there is one. It's a micro switch. Start by seeing if the wires are still plugged into it. Then listen to it activating, a little click. Then take a continuity tester to it.
As for the brake switch on the brake pedal, it is adjustable. I forget which way is which, but it should show in the Service Manual. It's very easy, it's plastic. I think you want to make the spring tighter, which means unscrew the "nut".