Errr....Ummmm..... maybe my WH7 is hooked up wrong... but it works. What I did was send 2 reds to the 48" VHO and 1 red to each of the two 55w PC's and just split the yellow into 4 leads, again 2 to the VHO and 1 to each PC. Everything seems to be working normally . Well I guess I should study up a little bit more on the wiring of ballasts
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