I am about to rewire an Omega Super Chromega F dichroic II for this, Sylvania / Osram ELH (300W/120V) Lamp, which seemed cheapest from B&H. Of course 4 lamps as original. I will add a new full circuit overheat cutoff switch at the factory setting of 130 degree F. Most likely it will be easiest to not wire for the lamp failure lights on the now redundant power supply. I'm splitting the power inside the head. I am also thinking of hacking a DIY timer as lately I am having trouble with used timers. Since this is 1200 watts I will need a relay anyway. Any advice is welcome. Anyone else done this?