blower motor??

:confused: my 2000 cherokee sport, blower motor is only working part time when not working if headlights are off it squeals if headlights are on it makes no noise at all, also lights for heater controls only work when headlights are off engine light is also coming on since problem began any ideas???

First I would find out if your alternator is putting out the reqired voltage to run everything. Then I would put the blower motor and see if the bearing are gone. As far as your engine light, You more than likely have a code inthe computer, I would get it read to see what it says is wrong. May have a couple problems.