Quoted from Dent00:If you haven't done it already, check polarity on the wires. Positive on mine was on the black wire. I complained a little bit to the people that sold me the wiring harness, but the instructions that I received specifically stated that the color of the wires was not necessarily black on negative and red on positive. For mine, black was positive and red was negative.
Thanks, but the wires from the run-dmd are correct in terms of colour - checked with a multimeter. There's something else not happy with it though - and I can't get any response from the run-dmd support folk (ie via the website).. I bought I believe the last run-dmd pinball board so maybe they're shutting up shop...??