Hello,

I am trying to replace an instant start ballast with a programmed start ballast, since it's a frequently switched fixture, and I'm tired of burning bulbs every two months.

The fixture itself is a F25T8 with two bulbs. The fixture wires include 2 blue wires coming out one side and a single red on the opposing side.

The old ballast had 2 red, 2 blues and usual hot, neut and gnd. Which I tied together the corresponding colors with no issues.

The new ballast (which is a 2 bulb T8, compatible with F25 bulbs) has 2 red, 2 blue and 2 yellows that I didn't have before.

The schematic isn't making sense to me and I have tried many different combinations of these wires, which succeeds to power only a single bulb at a time.

http://imgur.com/a/CVARP

Thanks for any suggestions.