I ordered this because it was said to work with F98T8 bulbs - 8ft long; 2 lamps. F98T8 ballasts have the following wires: black (hot), white (neutral), 2 blue (one for each of the two lamp terminals) 1 red (common for the other end of the lamp terminals). No yellow wires and only ONE red wire. This ballast is designed for 4 inch lamps and is supplied with blue, red and yellow cables. It will not work in an 8ft 2in fixture. The outer plastic bag it came in had a sticker that said "F89T8 Compatibility" but the ballast itself had no indication of this on its label. I figured maybe someone put the wrong ballast in the wrong container so I sent the first one back and ordered the same one. have the same Incompatible. So I sent the second one back, went to my local hardware store and bought the correct item for less than it cost at Revain.
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