928 Head lights *~*~*~*FYI

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02 Nov 2010 11:24 #1866 by 928mac
928 Head lights *~*~*~*FYI was created by 928mac
You have a few options depending on if your car is a U.S. or Euro
some have the 8" lamp while most U.S. get the 7"
Here is a page on the web of some cheep options.
www.autopartswarehouse.com/mmp/porsche~928~headlight~parts.html

Here is a $150 7" kit with a little more power
www.928motorsports.com/parts/hellalights.php

Some H 4 bulbs of all different colors
www.luminicsbulbs.com/h4_bulbs.php

The difference between a H4 and a H5 bulb
forums.rennlist.com/rennforums/928-forum...lumination-pics.html

Picture of H4 Euro Headlights - 8" Bosch around $350 for the pair
forums.rennlist.com/rennforums/928-forum...dlights-8-bosch.html

there are also HID (high intensity discharge kits)
www.slickcar.com/HID_lights.asp
www.slickcar.com/info_hid_kits.asp

PIAA Light Bulbs
www.slickcar.com/brandresults.asp?Brand=115

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02 Nov 2010 14:16 #1869 by pcar928fan
Replied by pcar928fan on topic 928 Head lights *~*~*~*FYI
8" glass ONLY on S4's and newer and they should ALL have the 8" frankly! H4 or H5 makes little difference. Knock yourself out, go w/ what you like!

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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02 Nov 2010 20:00 #1872 by Kiln_Red
Replied by Kiln_Red on topic 928 Head lights *~*~*~*FYI
Aren't the H4 bulbs illegal in the US or have the laws changed on that?

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02 Nov 2010 20:56 #1873 by 928mac
Replied by 928mac on topic 928 Head lights *~*~*~*FYI
I don't know. I think the big bulbs are frowned upon everywhere.
But they can't catch us all :D

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02 Nov 2010 22:04 #1874 by pcar928fan
Replied by pcar928fan on topic 928 Head lights *~*~*~*FYI
Austin,

There was SOME reason we never saw H4's in this country and I think any time you buy and H4 in the US there is a warning that says, "not intended for street use" or something like that. Has slowed NO ONE DOWN who wants them, that is FOR SURE! I just like the look of the big glass, I don't care if it is H4 or H5 personally...but that is just me.

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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03 Feb 2013 15:03 #13451 by PaulM
Replied by PaulM on topic 928 Head lights *~*~*~*FYI
Sorry I'm soooo late to this post but I just recently began researching converting my 1984S 7" US lamps to the bigger and better 8" euro style lamps. I've looked at both the US and RoW catalogs to assess the differences and the only things I can find that are needed to convert the headlight are the Lamps, adjusting rods for the Euro lamps and support brackets for the Euro lamps. All the other items in both catalogs have identical part numbers - even the headlight electrical connectors on the wiring harness are the same part number. Unless I'm missing something subtle, it should be a relatively simple swap out. Of course, I still haven't ascertained the legality of the Euro lamps but I'll cross that bridge if and when I need to. I sure see a lot of VERY bright headlights on the road these days! As a final note, I found replacement Euro lamps from a Porsche dealer for a little over $250 apiece which is well below many of the other sources on the Internet and they include the halogen bulb, protective cap and speed nut! If any of you see fault with my analysis please let me know.

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03 Feb 2013 15:37 #13452 by pcar928fan
Replied by pcar928fan on topic 928 Head lights *~*~*~*FYI
Paul, if your car is a US car (and it appears to be) with 7" then your best bet is to go with H5's and the US glass. I think that may be the same plug as your 7" bulb. The H4 EURO connector will FOR SURE be different from your 7" plug.

The mounting hardware is the same for either 8" I believe, only the plugs (and thus the actual bulb) differ. I could be wrong on this so someone with more experience or a PET will have to chime in, but the H4 and H5 bulbs have different plug styles.

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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04 Feb 2013 10:20 #13458 by wallyp
Replied by wallyp on topic 928 Head lights *~*~*~*FYI
H4 bulbs have the same connector as standard USA sealed beams, H5 uses a different connector.

A couple of gotchas to watch for...

If you buy eBay 8" lights, be certain that they are not from a right-hand-drive country where they drive on the left. It is illegal, rude and dangerous to use these in the USA or other left-hand-drive country where we drive on the right side.

If you are temped to buy replacement bulbs that are labeled xenon, or put out blue light to look like HID lights, be aware that the only way to make a standard bulb look like an HID is to filter out the red light portion of the output. You get blue light, but you can't see worth a damn.

If you buy higher-power bulbs, be aware that the (slightly) increased light output comes at the cost of much shorter life.

Wally Plumley
928 Specialists
www.928gt.com

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04 Feb 2013 11:16 #13459 by PaulM
Replied by PaulM on topic 928 Head lights *~*~*~*FYI
Thanks James and Wally, I was planning on ordering directly from a Porsche dealer (best price I can find at just over $250 each). The part no is: 928 631 101 03 and is identified in the RoW catalog as for a Left Hand Drive vehicle and "H4". I'm fairly sure that they will interchange with no problem.

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04 Feb 2013 20:04 #13466 by xstepson
Replied by xstepson on topic 928 Head lights *~*~*~*FYI
I could be mistaken, but I don't believe that H4s have ever been actually legalized by DOT in the US. That being said, a lot of folk on this and other forums have installed H4s. They provide a more focused and directable beam for nighttime driving.

Herman Koster has developed a wiring loom (sold through Roger at 928sRus) that is a plug and play to increase the overall wattage of the headlamps at high beam. I know it works by somehow having both low and high beam on at the same time during high beam
usage. I know no other specifics about it, but there were several folk at the last breakfast GTG (02-02-13) raving about how well it worked.

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04 Feb 2013 20:36 #13470 by pcar928fan
Replied by pcar928fan on topic 928 Head lights *~*~*~*FYI
There are some 7" H4 options out there that work, but I would be VERY SURPRISED to find ANY dealer who would sell you an 8" ROW H4... Hell, when you bring a EURO car in and have it EPA and DOT certified the Registered Importer, BY LAW, must BREAK or send back to a EURO country ALL your lights!

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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11 Feb 2013 18:57 #13518 by Jim M.
Replied by Jim M. on topic 928 Head lights *~*~*~*FYI
The H4's are far far superior to the H5's! With that said I have the H4's with Herman's mod and it makes all the difference in the world. They are not entirely plug and play becasue they get power to the bulbs from a direct source on each side, not the electrical panel. What that means is they are getting the full 12VDC at the bulb, not the typical 9-10 volts after the normal voltage drop. And, yes both the low and high beams are on when on high beam. Contact Roger if you want the best!

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12 Feb 2013 00:08 #13521 by the flying scotsman
Replied by the flying scotsman on topic 928 Head lights *~*~*~*FYI

Herman Koster has developed a wiring loom (sold through Roger at 928sRus) that is a plug and play to increase the overall wattage of the headlamps at high beam. I know it works by somehow having both low and high beam on at the same time during high beam
usage. I know no other specifics about it, but there were several folk at the last breakfast GTG (02-02-13) raving about how well it worked.


I have Hermans set up on my GTS...........simply awesome:D

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12 Feb 2013 14:08 #13527 by ROG100
Replied by ROG100 on topic 928 Head lights *~*~*~*FYI
8"H4 (LHD of course) are the way to go but are technically illegal here in the States. We sell them both used and new. It is illegal to use them not sell them. The H5 8" are pretty bad due to the terrible lens pattern. They can be made better with a larger watt bulb but this can lead, in some cases, to issues with wiring. Lots of problems with HID conversions and be aware they are also illegal on a 928.
I have 8" H4's on a few of my cars. On my GTS I have Hermans kit and the lights "light up the sky" on high beam brights. Far superior to any other light configeration I have seen or used.

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12 Feb 2013 20:10 #13528 by pcar928fan
Replied by pcar928fan on topic 928 Head lights *~*~*~*FYI
I should do Herman's deal on my '95!

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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19 Feb 2013 18:56 #13602 by Normy1
Replied by Normy1 on topic 928 Head lights *~*~*~*FYI
I have the H4's on my '85 S2. They are illegal in the United States, but the first owner of my car re-installed them after the federalizer got done hacking up the car~

Good grief they work! These are the best headlights I have ever seen. Welcome to Florida, where you can install a 15,000 hp Russian NK-12 turboshaft engine in your 928, and the state will happily give you a license plate. We have NO inspection here AT ALL~

-I remember landing a Boeing 747 in Khabarovsk, Russia one night and wound up wishing that the landing lights on this airplane were the same as the headlights on my 928. Those H4's are VASTLY superior to US lights! I have them aimed WAY lower than the manuals talk about to keep people from flashing their brights at me, thinking that I have my high beams on!

N

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20 Feb 2013 13:56 #13612 by wallyp
Replied by wallyp on topic 928 Head lights *~*~*~*FYI
Back in the day, I would run a 100-watt 4537 aircraft landing light bulb in the left high-beam light on the quad headlamp setup. You literally could see the bright green reflection from an interstate exit sign at over two miles on a Florida road...

Wally Plumley
928 Specialists
www.928gt.com

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24 Feb 2013 12:31 #13667 by Alan
Replied by Alan on topic 928 Head lights *~*~*~*FYI

...The H5 8" are pretty bad due to the terrible lens pattern. They can be made better with a larger watt bulb but this can lead, in some cases, to issues with wiring...

Roger - I disagree - the H5's can be made brighter with higher powered bulbs but IMHO this just makes them much worse. I don't think anybody should put higher powered bulbs in any DOT lens. The optics are poor - the focus system is just (intentionally!) designed badly. Light output has to be limited in the DOT pattern because otherwise the amount of spill that is not restricted from creating glare for other motorists becomes excessive.

In other words with DOT (including 8" H5) the only way you can see better is for others to see worse. Given that they are driving towards you at high speed just a few feet away - this is really not a smart trade off.

eCode/Euro pattern H4's spill almost no light where it shouldn't go - so when aimed right higher power bulbs only get you more light on the road not in oncoming motorists eyes.

There are no differences in wiring that will cause the stock wiring to have any more issues on H5 than on H4 for the same power bulbs. However the bulb connector for H4 has a much higher power capacity than the connector for H5. So the incidences of H5 bulb connectors melting with high power bulbs is far higher. For this reason I also don't recommend using an H5 to H4 converter (these are hard to find anyway).

I do recommend ceramic not plastic for the H4 connectors - easily sourced - ones with rubber boots are the best esp. if you live somewhere wet. H5 connectors are only available in plastic to my knowledge they at least do seal better.

Local relays get you brighter high and low beams, Herman's dual filament high beam gets you the most highbeam for sure - you need to use relays to do this, and beefing up the ground wire is a good idea. Just get the kit from Roger.

Alan

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24 Feb 2013 19:55 #13681 by pcar928fan
Replied by pcar928fan on topic 928 Head lights *~*~*~*FYI
What is the cost for a brand new drivers side H5 lens... the big chunk of glass (however it is provided normally?)

My '95 hit that deer and is all fixed but the only light they didn't replace was the drivers side H5 (it didn't break) and while it does not look bad, it certainly looks different from the others. That said, I bet few 928 enthusiast would even notice the difference, but I do! :)

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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24 Feb 2013 20:13 #13684 by 928mac
Replied by 928mac on topic 928 Head lights *~*~*~*FYI
Here are the bulbs I installed after I swapped the right hand drive 8 inch for the left hand drive 8 inch

Check the link out, its on my cars profile thread
forums.928oc.org/vbulletin/showpost.php?p=6021&postcount=232


Here are the large 8 inch H4 lamps
forums.928oc.org/vbulletin/showpost.php?p=9261&postcount=299

.

.

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25 Feb 2013 09:16 #13691 by Ducman82
Replied by Ducman82 on topic 928 Head lights *~*~*~*FYI
luck would have it my car came with the 8" H4 lights. they are plenty bright. but, i ended up doing a HID conversion. super bright.... probably to bright.... :-P

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27 Feb 2013 15:41 #13706 by Alan
Replied by Alan on topic 928 Head lights *~*~*~*FYI
BTW - contrary to what has been said before on this thread - if you have 7" DOT sealed beams the best lighting upgrade is 8" H4, and the next best upgrade is 7" H4 and a distant 3rd is 8" H5. A suitable single word to describe the H5 DOT pattern is - Crap!

Some folks like the look of the 8" H5 - but its basically the same look as an 8" H4. An 8" H4 is usually slightly cheaper than an H5 new (presumably a volume thing) - so you'd be crazy to buy new H5s.

7" H4 is still the bargain choice since they are very significantly less expensive than any 8" option...(~ 1/4 the price) - the only thing not to like is the look (it looks similar to a 7" DOT sealed beam) with the trim ring.

Please only do bulb power upgrades or HID in H4 type lenses - we will all thank you for not blinding us.

H4 lenses from anyone but Bosch, Hella or Cibie are likely to be garbage. Garbage also includes any plastic H4 eBay lenses and anything that mentions having a diamond pattern. Diamonds are for jewelry not headlights.

Alan

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01 Mar 2013 08:11 #13725 by wallyp
Replied by wallyp on topic 928 Head lights *~*~*~*FYI
Headlights ain't the place for stylin'...

Wally Plumley
928 Specialists
www.928gt.com

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23 Mar 2013 23:51 #13990 by emmanuelli
Replied by emmanuelli on topic 928 Head lights *~*~*~*FYI
hey guys? what about fog lamp updates?

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24 Mar 2013 08:49 #13991 by wallyp
Replied by wallyp on topic 928 Head lights *~*~*~*FYI
Why bother? Does anyone actually use their foglights for serious visibility?

Wally Plumley
928 Specialists
www.928gt.com

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24 Mar 2013 22:56 #14007 by Alan
Replied by Alan on topic 928 Head lights *~*~*~*FYI
They do actually work in fog pretty well...

I have HID's in the fogs (with some reflector modfications). These give good lateral lighting for corners. I also sometimes use them alone in the city with good road lighting.

ROW cars keep the fogs on with the driving lights unlike USA cars. You can configure a USA car like this too.

Later cars have the option of fogs as DRL's (stock in some countries - inluding Canada...)

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26 Mar 2013 20:59 #14052 by pcar928fan
Replied by pcar928fan on topic 928 Head lights *~*~*~*FYI
Wally at dusk I will often run with only my fogs on...then when it gets to dark or I am on roads that are not lit I will turn the actual headlights on and turn off the fogs...

James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black

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27 Mar 2013 09:06 #14062 by emmanuelli
Replied by emmanuelli on topic 928 Head lights *~*~*~*FYI
i use my fog lights as well. most of the time. in the city i dont put the headlights on unless its very dark.

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