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I am trying to wire a QTP 2x40T12 ballast to a light fixture that only has one bulb. I bought it at Menards and they tell me that I can

do this. I tried hooking the yellow and blue wire up and the bulb did not light. Can anyone tell me if you can do this or not and how.

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You will be required to use a volt meter to test if there is power in the terminals of your QTP 2x40T12 ballast. You will be able to tell if there is input in in the unit. If the wiring is done incorrectly it is possible that the unit is energized. You can invite a technician for further help.

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On the new ballast there should be a wiring diagram.Usually if you wire it exactly how the old one was,you should be ok.Make sure the switch is off! Is the bulb new too? A bad ballast would prematurely burn out a good bulb.Are you sure the ballast is correct.2x40t12 means 2 40watt t12 bulbs.

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The ballast has a wiring diagram, but it is for two bulbs not one. By the looks of the diagram, I should be using the yellow and either the blue or red. Tried that and did not work. Found some other things on the web and they said that I need to cap the yellow and use the red & blue. Does not look correct but I may try it just to see.
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Get a ballast for 1 bulb,you got the wrong one.
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