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.
doco Reviewed by doco on . Raw MH Ballast Wiring I think this really belongs in Growroom Setup but I don't seem to be able to post my diagram in that forum so here it is: I picked up a raw MH ballast with capacitor and I'm ready to wire it up. Can you guys look at this diagram and confirm or correct what I have in mind? Don't wanna smoke a new bulb or my house if I can help it. Rating: 5