So as mentioned in the title, if I put the hazards on, for example, the pulley bearing squeaks in time with the lights. Would this mean its the alternator pulley or could it be the idler? I'm trying to be more pro-active about preventative maintenaince, and with all the dirt and dust the engine bay gets (and motor, for that matter, might be time to clean the throttle body as its never been done) I'm not surprised there are are squeaks, just hoping they can be lubed and not need a new pulley.