Window Motors Becoming Hot/Warm

[davidthefat]

Now that can't be a good sign: I am no electrical engineer, but when a motor gets hot, that is not a good thing. What could be the possible source of this? Now they seem to be hooked on all right, but one gets hot while the other one stays cold to the touch. Something must be short circuited. And while I was testing the motors today, I saw sparks jump out from the corner of my eye (I was staring at the computer screen, so I do not know the cause of the spark) It is not software that is giving it a problem, I am giving them the same voltage. Would it be the Black Jaguars? Only the black jaguar one seems to heat up, that was the case for the other motor that burnt out. Seems like the most obvious, but I would assume the newer ones were more "stable" than the beige jaguars.