Universal Lighting Technologies B234SR120M-A000I Electronic Ballast, Fluorescent, T12, 2-Lamp, 120V, Black

So my garage lights -- typical florescent 4 ft long bulbs that you typically see in garages etc. -- started to flicker then eventually not turn on. I am fairly handy however, not an electrician or electrically inclined ( I can swap out outlets, install timers, ceiling fans, light fixtures however, get a little lost on three way switches and things like that).My first instinct was to change the bulb. Did nothing. I probably should have done an internet search on the issue as my problems tend not to be unique. However, I didn't and just put the task off as my three- bay garage got darker and darker as they each began to fail.A family member told me it's most likely the ballasts. Of course he was correct. The important thing is to TURN THE POWER OFF AT THE BREAKER then take the outside plastic cover off, bulbs out, and pop the center "cover" off the unit. Probably can be done by squeezing the cover inward to remove it from its slots. This will reveal the electrical workings of the fixture, including the ballast. Check the wires coming out of your particular ballast and make sure you have the same ones as this product. Take a picture with your phone of the original ballast and then search for ballasts.Mine did, save the yellow wires were on the other side of the unit. Remove the old ballast and simply wire nut the new ones in matching same color to same color. I pre stripped the wires on the original to about an inch and the same on this unit. Twisted them together, trimmed the excess, then capped them off with a wire nut. I did buy a pack of colored wire nuts. You may need to if you don't have a lot laying around. Need 6 per unit -- the black and white wires on the original should be connected with a nut on original installation - these can be reused. Doesn't really matter what color the nuts are. I guess you could simply twist and wrap with electrical tape too.This unit was longer than the original so it did not mount into all the originals places, however one bolt holds it in/up and some double sided foam tape can hold the other. this unit is considerably lighter than the original.Pop the breaker back on after and should work like new. Note: working above your head is difficult. Use a ladder that is as close to the unit as possible that can be safely done, this will save your arms, especially when you have more than one to do.

Ballast was brand new and worked well as advertised. I'm a maintenance manager at a chain of stores in Ohio and I already know how to install these things. However, even if you're somewhat a novice in the electrical field, these things couldn't be easier to install. Wires are all color coded. So, matching and hooking up is a breeze. You will find 2 reds, 2 blues, 2 yellows, 1 black, and 1 white wire on the ballast. As long as this is the correct ballast for your fixture, you will find the same colors and amount of wires on the fixture. Everything is connected using screw-on wire nut connectors, which are reusable. Just be sure to disconnect the main power to the fixture before attempting to change the ballast so you don't end up being another statistic. This (2) bulb electronic ballast is a more efficient replacement for magnetic T-12 ballasts, and is used in either a (2) T-12 bulb fixture or paired with a second equivalent T-12 ballast in a (4) bulb fixture. BTW, remember the "hum" you might hear from a fixture powered by a magnetic ballast. Well, say "bye-bye" to the humming sound. These electronic ballasts are virtually silent.

Update Jan 6, 2021 - After exploring the FEIT web site I found a ballast compatibility chart that showed my LED bulbs compatible with this ballast. Tried again with the LED bulbs. Still didn't work. Tried swapping ends on one bulb, still didn't work. Tried swapping bulbs and it finally worked. At least I think that was the sequence as I was not recording what I did. Regardless, in the end everything was working. So changed from 2 stars to 5 stars. So make sure you try all different orientations of bulbs and swap bulbs between each other if you are having issues using LED bulbs with this ballast.Original review Jan 4, 2021:Replaced a MagnaTek 439-L-TC-P that I suspected of causing some mild flickering in the laundry room where LED bulbs are installed. After a relatively easy install, only one of the two bulbs would dimly light up. The other, mostly not at all. If I removed one bulb with power on and then put it back in, then they would both come on at normal brightness. But as soon as you turn them off, then back on, same thing. I put the old fluorescents back in that the LEDs replaced and they worked fine. I give two stars for working with the fluorescents but take away three stars since they did not work with modern lighting while the 25 year old ballast did. There should be something in the description to let you know it may not work with at least some LED bulbs.It should also be noted that the yellow wires come off on the opposite side of the ballast as the MagnaTek. The yellow wire lengths were long enough to double back across the body plus maybe 10-inches (I didn't measure this) so I had enough length to splice into the fixture yellow wires so no harm no foul. You may just want to be aware to cut off the yellows closer to the old ballast than not just to be sure you have the length needed.

Product arrived on time and in good order. Very easy to replace. Just remove the old ballast and cut the wires close to the ballast. Then install the new one and match the wires up, blue to blue, yellow to yellow, res to red. Use wire caps for connection. Connect the white and black to the power and put cover and bulbs back. Hardest part was putting the cover back on. Works like a charm, no delay in lighting. Hope it last as long as the old one.