Here is the corrected Metal Halide 400 watt Type M59 ballast wiring schematic. In the first diagram above I had the black & white leads from the wall crossed.

And yes, McBlaze, this is made from raw parts: I got the GE ballast/capacitor off ebay for $30 delivered and the ballast box from BGHydro for $25, a power cord and a cord to the MH lamp was maybe $10 - net result: 400 watt MH Ballast for $65 and a little research to help keep from becoming a statistic.