I am trying to replace a light ballast. They both have red wires coming out of thr right.

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But the old one has a white,black and blue wire coming from the left side.The white goes to the lamp socket.There is a white wire coming out of the same side of the lamp socket to the white house wiring.The blue wire goes to the other side of the lamp socket.The black goes to the black house wiring.The new ballast has a black ,white and 2 blue wires. This is a single blub 3' undercabinet lighting fixture.
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