# group buy: Cheap HIDS

**URL:** <https://forums.speedlife.net/t/group-buy-cheap-hids/110444>\
**Category:** Classifieds\
**Created:** [October 22, 2007, 12:29pm UTC](https://forums.speedlife.net/t/group-buy-cheap-hids/110444 "2007-10-22T12:29:24Z")\
**Posts on this page:** 1\
**Showing post:** 23

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**Author:** ![renman](https://avatars.discourse-cdn.com/v4/letter/r/ecb155/32.png) [@renman](https://forums.speedlife.net/u/renman)\
**Post date:** [October 24, 2007, 7:26pm UTC](https://forums.speedlife.net/t/group-buy-cheap-hids/110444/23 "2007-10-24T19:26:49Z")

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> [@Taffy's Sunday Meet 7/16 @ 8pm](https://forums.speedlife.net/t/taffys-sunday-meet-7-16-8pm/14572/15):
>
> Hey, what’s the difference between the H4 Hi/Lo and the H4 Bi-xenon? Isn’t that the same thing? I need it for a foglight that doubles as a high beam.

Usually, Hi-Lo is used to describe an H4 system where the Xenon bulb is the low, and a Halogen is the high. Bi-Xenon refers to a system where a solenoid moves the bulb back and forth to give the high beam and low beam effect.

So it’s the same effect, you get both the high beam and the low beam, but in different ways.

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