Hear a clicking noise when braking. can hear it at slow speed then when put on brake. the brakes are good. had them checked.

Where is the noise? Front or back? At the brake or differential? Usually grinding and clicking is the rear brake drums. Brake shoes/hardware. Year, make, and model?

This could be the brake pads dragging or it could be a wheel bearing. You can check one or the other. The wheel bearing is tested by jacking up the car with that wheel off the ground and see if you can rock the wheel side to side or up and down. The way to check the brakes is to take the wheel off and look at the brake pads.

Look at the constant velocity joints on that side. When the rubber boot tears it lets road dirt in which fouls the grease and allows premature wear on the cv joint components.

Can be brake pads are thin and the warning scraper is what you hear. Might be a wheel bearing.

check the cv joints for wear as this is the clicking noise you are hearing. IT is most noticeable under brakes with the engine still in drive or you can hear it when going slow and turning a circle

THE CLICKING NOISE IS THE SHIFTER LOCK RELEASING, NOTHING TO DO WITH BRAKE LITES. CHECK FOR GOOD GROUNDS AT REAR LIGHT SOCKETS.

Have you had the U-joints checked? They usually click when turning, especially the front ones. Hope this helps.

disc brakes on back. sometimes they will stick until they get hot. sometimes will stick when they get wet. check to see about your anti brake locking system.

sounds like the problem is brake related. That ticking you're hearing is your front brake rotors, clicking against the sides of the brake caliper. As you speed up, the clicking will get faster untill you won't be able to hear it, (it's still there, it's just inaudible at such a rapid revolution) upon deceleration, you will notice it more prominently, clicking in rhythm to the speed of your wheel's revolution.
basically, It indicates your brake pads are worn down. Unfortunately the condition will get worse, louder, and the car will become extraordinarily more dangerous to drive as front braking will be compromised if the vehicle's braking conditions persist.
A qualified mechanic will setup the brakes, rotors, check for warpage, hone the rotors if need be, and be able to install a proper replacement pad.