hi, thank you for help , i found the fuse in line ,and it was blown . replaced it continued testing,found power coming out of 3 prong connector (red wire) goes it blower motor (red wire) comes out of blower motor (blue wire) into blower regulator pn a1248202710 , then i get nothing coming out of regulator, but if i ground blue wire , blower works .i,m thinking the regulator is bad , (any way to test ? )