Replacing/Wiring Fluorescent Ballast - Extra Wires

On the new ballast there is a wiring diagram on the label of how the wires should connect.

dmyvr wrote: ↑On the new ballast there is a wiring diagram on the label of how the wires should connect.

My understanding was that I was to snip the wires at the ballast, unscrew the ballast from the fixture, screw in the new ballast, and then make the connections using the new ballast, fixture wiring, and wire nuts. Therefore, I would still be in a situation in which the new ballast's wiring was incompatible with the fixtures wiring (making the diagram useless).

Am I actually expected to remove the old ballast and remove all of the wiring to the fixture as well? Just looking at the fixture, it doesn't look easy to remove the existing wiring from the fixture.

From what i can tell you can keep the fixture wiring.

From old ballast pair of blues to new ballast pair of blue.
From old ballast pair of blues to new ballast pair of red.
From old ballast pair red (twist reds together) to new ballast single yellow.
From old ballast single yellow to new ballast single yellow.

https://www.youtube.com/watch?v=cv4V5t_sQFE

I've done this retrofit 10+ times through my office.
Its really easy if you follow the youtube video here.

http://www.lighting.philips.com/pwc_li/ ... 0N-new.pdf

mondriano wrote: ↑My understanding was that I was to snip the wires at the ballast, unscrew the ballast from the fixture, screw in the new ballast, and then make the connections using the new ballast, fixture wiring, and wire nuts. Therefore, I would still be in a situation in which the new ballast's wiring was incompatible with the fixtures wiring (making the diagram useless)..

If you cant figure this out, you really shouldnt be the one doing this.

SomeOtherDude wrote: ↑https://www.youtube.com/watch?v=cv4V5t_sQFE

I've done this retrofit 10+ times through my office.
Its really easy if you follow the youtube video here.

Thanks, this is what I was looking for but unable to find.