OK, here is something you can do. The wires going to the ballast are 24vdc, you can tap into them before the ballast to power your fluorescent in the topper. The red(positive) and red with black stripe (negative)going to your sound board are 12vdc and will power the chase lights. The only other way is to get 3-12vdc power supplies like battery chargers etc. Use a power strip to turn them on. The first 12vdc use for chase lights. The second 2 wire in series by taking the positive wire from 1 and connecting to the negative wire from the other, then there will be one positive and one negative from each power supply and will make a safe 24vdc