Bjbpe

The following headlight bulbs are currently available on ebay:

9004/HB1 6000K White bi-xenon hi-low hid replacement bulbs with harness

Does anybody have any experience with this system.

Living in rural Wyoming has a lot of advantages but critters on the rural highways are not on the advantage list.

SeanR

Call Roger and get some 85w/100w bulbs for your head lights. A lot of us have tried the HID route and while they will light up the dark side of the moon, oncoming traffic will want to kill you.

Alan

Do not do this - its a bad idea. Just get upgraded bulbs in H4 type housings - if you still have the H5's that came on your car - be nice to everyone else and leave them as they are and just drive slowly at night.

We've been down this path before here - I have never seen any details of a HID conversion on a 928 that worked very well. On H5 lamps they are always criminally hideous and people should hunt you down to get you off the road...

On H4's they are at best still only mediocre (poor on 7") ... just get good incandescent lights in H4 lenses and if you need more power get local headlight relays. There is no simple cheap or easy solution. But going to 7" H4s with local relays is not so expensive if you wire it up yourself.

Alan

Alan

You keep asking the same question... and the answer is also always the same....

https://rennlist.com/forums/928-foru...ght-bulbs.html

https://rennlist.com/forums/showthre...eferrerid=6055

Time to just do it...?

Alan

Bjbpe

For Alan:

I live on SS and a part time engineering position with the county here in Wyoming. When folks suggest very expensive options (like the many hundreds of dollars for European headlights) I have to look further. If I was still in aerospace the situation would be different. I judge from your responses that you are still fully employed in the computer programing field. Your income is probably quite different from mine. Sorry to get personal but how else do I answer your question. My advice to you is not to get old; it is hard on health and income.

Ducman82

for my part i did that HID kit.... TO DAMN BRIGHT........ even with euro H4 Housings..... i just did the Roger bulb/relay adaption... works better WAY better

sstrickstein

Don't waste time with hid. That's old tech. A simpler cheaper way to go is led. Truck lite has a bolt in plug and play set up for 7"round. I've had mine for over a year and they are as bright as any system I've seen. They can be ordered online or at your local napa auto.

MjRocket

Have a pic or two of these on your car?

Landshark87

not sure what i had in there originally, but i put some ZXE bulbs in and it was a HUGE difference - much brighter and whiter.

i would NOT use these if your car is a daily driver, as they probably won't last too long as is my experience with Osram/Silverstar bulbs in the past. they aren't cheap ($40-$50), but they do make quite a bit of difference. i would have ordered the Euro Osram Silverstars (no blue coating), but i needed something better than what was in there, and these worked well.

Alan

I gave you an answer that accomodates that (actually several times previously too...).

For a cost effective improvement get:
1) 7" H4s w/ stock H4 bulbs to replace the H5s (need trim rings and new connectors)
2) Get upgraded bulbs 80W/100W
3) Implement local relays

You can do these in sequence for better results each will have a significant benefit - I'd do 1 & 2 because you'll need new bulbs anyway, decide on the local relays later.

You are likely talking ~$80 for both H4 lights (from Roger), ~$15 for the bulbs and if you implement yourself ~$50 for the relays.

If that is still too much - there is nothing worthwhile you can do to make this much better without compromising everyone else, but if you are rural enough that there aren't many other cars on the road you could look to find better highbeam only options e.g. 100W H3s in the Aux driving lights. However subjectively having brighter highbeams makes the low beams look weaker when you switch back... trade off. Could always just slow down when there are more cars around.

My eyes aren't what they were either... and better illumination does help - H5s look nice but they are very heavily compromised designs.

But regardless there are a range of things that are worthwhile to do and and also many things that are just junk - better to do nothing than get junk

Almost doing nothing could be to just get fresh bulbs - your existing bulbs may be dimmer than when new due to capsule darkening. Replacement stock bulb are probably $12 for pair 45/60. This may make a small difference, a slightly higher color temp (e.g. silverstars etc) might help you but this comes at a significant premium in cost and usually lower bulb life too, if you need much better performance this probably isn't it.

Alan

Bjbpe

Alan has chastised me for being unable to make up my mind on replacing my light bulbs. Fair enough. However, I spent a little time today looking over all of the notes that people have sent regarding the best bulbs on the basis of cost and performance. Some of these notes describe systems in thousands of dollars. If you are the beneficiary of an inheritance measured in multiple millions, that's fine. However, for us dumb old farts a suggestion that would cost around $50.00 would be nice. Such a suggestion was made and someone else (Alan) advised don't do this.

Here's my situation as I described it some time back. I live in Centennial, WY which is a very small town in the mountains about 30 miles from Laramie. The highway between the two towns is pretty desolate; maybe one car every few minutes with a lot of wildlife (deer and pronghorn are the most common). Several years back I nailed a deer with damages of $10k. Last winter it was an elk; fortunately I was barely moving and more fortunately neither hit was with the 928. Obviously good lighting is important and I currently am running the same lights that came with the car back in 1987. The bulbs are dim and in need of replacement. I could go with the Sylvania top-of-the-line which might cost about $60.00 and that is in my price range. Or I could go with the bi-xenon bulbs described at the start of this article. I simply am unable to afford lights that cost in the thousands. Alan, I promise I wont ask again if someone can clarify all of the various options being suggested.

jeff spahn

I just ordered the 8" H4 from Roger and the wiring kit to send full power to them. Thanks, Alan.

Randy V

The former is inevitable, however the latter is not with proper planning in the earlier years.

Kevin in Atlanta

Please do not get him started...

jeff spahn