heater only works when switch is in high

by Bobby Martin
(Rockwood,TN)

I have a 1976 Corvette with new blower motor,switch,reface kit for heater controls,temp control cable,new vacume line kit,heater core,hoses,ect.The only time the blower motor works at all is when the switch is in the high position,and even then dosent blow very hard.Also it keeps running when the switch is in off position.I have to turn it to med or low to shut it off.Please help me with this.Its 20-30 degrees here in Tennessee in the mornings and Im freezing my but off.

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