I purchased a Fasco aftermarket combustion blower for my Breckwell Classic Cast because yet another OEM motor's bearing are shot. I figured it couldn't hurt to try a Fasco, seeing as I've replaced 3 of these blowers in the past seven seasons. There is a black (hot?) and white (neutral?) wire that had proper ends to go to the stove wires. But I went to install it and the electrical posts on the motor are the same, no markings. I figured if I hooked it up wrong, it would rotate the wrong way. How can I tell which is which? Does it even matter? There was no literature in the box... Thanks!