Which blower. The heater blower is terrible, the A/C not so bad if you cheat.
One can see the heater blower by looking through the center vents. Sometimes a long screw driver can move it through the vents. Somtimes all that is necessary is to give it a shove and let it run for a while. The electrical is available under the hood. There is a four pin connection on the fire wall.
Bosch Master, ASE Master, L1
33 years MB technician