I am having some dmx issues and wonder if it is my cabling. I am using 4 conductor speaker wire (from mono price) with waterproof connectors. I am sending dmx signal through cat 5 to the first dmx controller and injecting 12volt power into the speaker wire and connecting the cat5 to two of the 4 speaker wires, then sending all down the line and re-injecting power at various points. I am using what you might best describe as a trunk like with taps off the trunk at various points (insulation stripped back and line soldered to the wire and re-insulated). I am havng a number of on and off issues and wonder if running dmx data over non twisted wire next to 12volt power wire in the same caseing is causing RFI or some other interferance. Since many of you are very knowledgeable in these things, Would issues be likely running power and data down 4 condutor non twisted wire. I know David (Holliday Coro) uses cat5 with no major issues but this wire is not twisted although it is insulated. The wire is 18 gauge. Or should this wiring type be reasonable?