Failure mode for blower motor 300cd

My cars blower was erratic (sometimes it would operate on high, sometimes it would operate on only medium, sometimes it would barely blow) and I thought that either my switch was malfunctioning or the fan motor was going out. It seemed that it might be the motor since even the defrost manual high speed setting was unpredictable. As of yesterday it has stopped all together. Is this the normal failure mode for fan motor or switch? I will try to jumper power to it today or this week and see if I can coax it to life, but I was curious if I should be trouble shooting switches or blower first.
thanks!

Forums

Chassis Model Number