Dash panel workin but blower motor wont come on?

It would help to know the make and model. Different manufacturers put them in different places and mount them different.

Are you talking blower motor? If Yes, Have you checked for power at the resistor under dash on passenger side, behind glove box. Power should be going in to resistor then out to blower motor.

Not sure I follow your question.
The alternator charges the battery so it would not have a direct effect on the blower motor.
If the blower motor is not working, the problem could be the blower motor, a fuse or relay, the resistor if equipped, or the controller on the dash.

Its located under dash,or near glove box.

The dash panel lower side has to be out.

HEATER BLOWER MOTOR

Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.

It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.

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For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

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These will help.

Thanks.

CHECK BLOWER MOTOR FUSE AND RELAY.IF ALL IS GOOD.BEST TO REMOVE BLOWER MOTOR HOTWIRE IT.IF DONT WORK REPLACE BLOWER MOTOR.IF BLOWER MOTOR WORKS.YOU HAVE FAULTY CONTROL SWITCH OR MODULE.BESURE TURN OFF RADIO FIRST YOU NEED TO REMOVE NEGATIVE BATTERY CABLE.WAIT 15 MINUTES BEFORE WORKING UNDER DASH.THIS WILL DISARM AIRBAG AND BCM UNDER DASH.YOUR BLOWER MOTOR UNDER DASH ON THE PASSENGER SIDE FAR TO BACK.YOU NEED TO REMOVE BOTTOM PANEL TO GET TO IT.

check fuse to blower motor under dash you may have a bad blower motor

follow the wires back from the blower motor. The wires from the blower motor should plug into it. That is the part you need to change. Called the blower motor resistor

the blower speed control switch is probally bad replace it first than if that doesnt fix the problem than move to the blower motor itself as it might be bad

on the paasenger side of the car under the dash. Remove the lower dash panel below the glove box and the module is in the duct for the heat to the far right side of the footwell.

A component called a Resistor located near the blower motor controls the blowers speed. it has a plug and a couple of screws to remove. Replace this Resistor. It is usually located in between the wiring and the blower. Sometimes mounted on the blower motor itself. It can be a little hard to remove because of limited space under the dash.