A H7 bulb failed in my modified 2002 XG350 after 2 months. A 10 amp diode had been placed in the headlamp circuit that reduced the voltage at the bulb to 12.8v. Apparently, this modification has not extended bulb life by any appreciable amount. At this point, I'm starting to look into an HDI system that uses bulbs with no filament. Anybody have one of these? I see you can get them for around $75 on Ebay. Any recommendations?
Dan
I'd be concerned about the reliability and durability of the parts in any HDI system you can purchase for as little as $75.
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Additionally, the reflectors in the headlights are not designed for HID bulb and the result is a poor beam pattern that creates a lot of glare for oncoming drivers. For more details, see the article at:
Bummer Dan. Good follow up though. Thanks for that. This really does raise questions about the H7. Anyone know what other cars use H7, and do they suffer the same short life? This whole H7 thing has take on a certain intrigue...
I found this
In addition, I found bulbs listed from $6 to $48. Quite a price spread.
It looks like the same kind of gimmicky crap that everyone is selling. If you haven't looked at Daniel Stern's site, you should check it out as it's very enlightening (no pun intended).
I've tried several of them and haven't found any correlation between price and bulb life. I'm now on the least expensive bulbs so far - $20/pair Hella standard bulbs - and we'll see how they hold up. They're rated for much longer life than any of the others I've tried.
Numerous people, not just Hyundai owners, notice a seemingly short lifespan for H7 bulbs. It's been my experience that many H7 bulbs fail within the many manufacturer's new vehicle warranty periods.
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I still think it is something about the car. Could be bad or loose contacts, voltage surges in the system for some reason or some other unknown reason.
My experience: Have 02 Sonata and it has never blown a bulb anywhere and it has H7s. Have 15 year old Integra and it has all the original bulbs.
Once had an house air conditioner that kept blowing its fuse. It was one of those that clip in similar to fuses in the old cars. I bent the holders in so they held the fuse better and it never blew another fuse.
Good luck,,,Luke
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