I have an old Advance ballast for my 2 light 8’ florescent fixture. It has 4 wires coming from it; black, white, red & blue. Each wire goes to an end that holds the bulb.
The only replacement I can find is a smaller Philips that has 5 wires; black, white, red & two blue. The person at the hardware store was not sure how to hook it up. Can you help?
