you still havent elaborated on just what the hell power supply it is you have? as for a possible current limit method such as your freinds,
if its a regulated power supply then you find a normal incandescent globe with a cold resistance low enough to drop about 2-3V at your ideal current, and a voltage rating higher than the supplies maximum output, you hook this globe in series with the output and move the feedback network of the supply after the globe so it still outputs the correct voltage for small loads,
when you exceed the current and the globe will start to get hot making its resistance increase limiting the current furthur, as an added bonus you have a nice bright indicator that your drawing excess current