Rear brake lights stay on, well two out of three. The cab brake light works as suppose to. Have replaced the brake switch once already and that worked for a bit. But now it back and wont leave. In order to make sure the battery doesn't die , I have to either take off the Neg. battery cable Or as I have come to find out recently. Pull the brake light fuse in the engine compartment fuse box. getting extremely annoying now that its winter here in MN and it has the mechanics stumped as well. HELP