Do these bubs need a Phillips ballast
941405
No these will work with other brands but must be a ballast that is rated to run this perticular watt and size. Thanks, LBP
941406
No these will work with other brands but must be a ballast that is rated to run this perticular watt and size.Thanks,LBP
1057298
you will have to bypass ballast completely, especially if installing more then one, mine included instructions
1683052
You don't. Throw them away and buy something else. I tried with no luck. 55w ballasts are notorious for burning up and causing problems. Go with 50-80watt crew led bulbs or 35watt hids
1229824
If the bulbs you are replacing have the same electrical contacts (the part of the base that plugs into the socket is the same) then it will work fine. No ballast is needed (plug & play, so to speak). The original incandescent bulbs in my BMW would burn out repeatedly after about 400 miles. I have had these bulbs in for nearly 10,000 miles with no issues.
1482417
Yes it's ok just use the harness that comes with lights.ballast take full power at startup n much less when the lights get full heat about 20-30 seconds later. If only one light turns on the first time you need better power input to the ballast.
800571
Yes ,i did it just worked fine. my ballast is for 600Wthe bulb works in 100% 75% and 50%!
1196159
you don't need one. Plugs right into regular socket. Doesn't need ballast or reflector. Worked well for me....for about two years...than started losing lights. When I tried to contact company....I found them out of business.
405809
No ballast a relay may not hurt but use some heavy wire. Bulb replacement are easy.mounting is simple esp if its a truck
1520876
ballast is bypassed, would not work. I'd suggest labels for hot and neutral too.
1057302
will work with or with out ballast .. and easy to install . and easy to read instructions
2275760
It doesn't need one, it's LED. Only Fluorescent requires the ballast. Just disconnect and toss the old ballast.
1557977
Nope, you need a ballast. Plug your light into a ballast then plug your ballast into a normal wall socket.
1214824
Yes, that type of bulb has an internal ballast and requires a mogul base socket, which is exaclty what this has.
1565109
The ballasts themselves will guard against flickering. More than likely the stock/oem bulbs used more power than these HIDs would. I know the load dropped considerably since my lights used to dim when my sound system played bassy songs whereas with the HIDs it doesnt anymore.
1640085
U don't need ballast on this one. But it gets hot.... Look for slave flash and its almost the same but u need a slave transmitter/receiver
1318398
I've used the regular bulbs from my OEM factory headlights. You have to use everything to include the ballast for these.
583564
Yes. This bulb does need a ballast. This particular bulb is meant to run off of an 400 watt high pressure sodium ballast with an S51 mogul socket.