[s-cars] Blower fan madness

[Rit bellis]

My blower fan has gremlins. One day, it comes on fine, defrost works great. Next time I start, nada0 zippo. Sometimes it comes back on after a big bump. Sometimes not. Intermittent ground?  Bad fuse?  Seems to happen when extremely humid. Ignition switch?  Once I also got head lamp out and battery warning. Restarted all golden. Help. Thanks! 
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