The brake warning light on my 89 4x4 will not go out. I replaced the front pads which were down pretty far thinking that the extra travel was cauining a low pressure situation. The light glows stronger when the parking brake is on but it stays lit even when releasing the parking brake. Could I have gotten air in the system form letting the pads run so low??? also when I was doing the brake work I noticed that the boot on the axle shaft is torn. Do the split boot kits work?? what should I use to clean the joint before repacking??