I’m trying to install a new blower motor in my 2004 Pontiac Aztec. I ordered the part from Ebay and it said it was compatible with my vehicle. I went to plug the new one in and the plug doesn’t fit the part. Does that mean it isn’t compatible with my vehicle and I need to return it? If so, I need to know how to order the correct part 100% this time!! I don’t have time mess around with parts that don’t fit!