[mike31154]

I wouldn't recommend a trial & error method of determining polarity for a motor. Not likely that anything bad would happen with 24 volts, but not worth the chance really. Try to determine polarity with your multimeter. As mentioned earlier, if the signal from the controller is some sort of pwm or pulse, an oscilloscope is the best way to detect that, but the multimeter should react by jumping off zero. If you have an old analog multimeter, you may be able to see the needle move. It will either jump in a positive direction or try to hit the stop at the left of the meter display.

I asked in an earlier post if you could determine whether the motor is a PMG (permanent magnet) DC motor. If it is, it should run on straight DC voltage no problem, this is how all the little 12vdc cooling fan motors work. The coil circuitry design of a PMG DC motor is such that the voltage is switched internally to keep the rotor moving. However, on a low cost product such as the Wavelines, it will be next to impossible to find out more details on the design. Even more established companies producing higher cost hardware are unlikely to be very free with their design information. Best of luck with this endeavour!