H4 headlight bulbs

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05 Jul 2016 18:45 #19118 by wyman
H4 headlight bulbs was created by wyman
I would like to upgrade my H4 bulb in my headlights. Current ones are yellowish and not that bright.
Comparing my 30 year old 928 with the current production cars lighting effects is so dramatic now. :ohmy:
Looking at the Bosch light website (www.de.bosch-automotive.com) many product choices are offered.
Anyone tried the Bosch bulbs and do they last?

Thanks
Wyman

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21 Jul 2016 10:08 - 21 Jul 2016 10:08 #19155 by davek9
Replied by davek9 on topic H4 headlight bulbs
Have you looked into LED headlights? 928 Motorsports sells them and H4 LED's can be sourced on the web too.
I'm running them in 3 of my 928's w/o any issues and they draw less current then stock bulbs.
Last edit: 21 Jul 2016 10:08 by davek9.

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21 Jul 2016 11:11 #19156 by wyman
Replied by wyman on topic H4 headlight bulbs
Folks
I upgraded the bulbs to the PIAA H4 Xtreme White Plus Halogen bulb so. Very happy with the
Results. Power consumption of 55 watts produces 110 watt of brightness. Checkout attached image of
Brightness comparison. Headlight on left is stock whereas right side is PIAA bulb. And the example is
On low beam setting. Much more whiter and uniform coverage on the lens.

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21 Jul 2016 11:32 #19157 by davek9
Replied by davek9 on topic H4 headlight bulbs
If you haven't done so as yet, get ready to replace the Headlight relay, I found upgraded light bulbs pulls more load on the old parts ;)
That's why I went w/ LED's, I had a pair of those in one of my cars and yes I did like them, relay contacts went soon after, however I drive w/ my lights on a lot more then most.

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22 Jul 2016 12:32 #19160 by wyman
Replied by wyman on topic H4 headlight bulbs
I will minimize the affect of the extra power going through the headlight relays by not using the high beam feature for now.
Fortunately for me, I am always in the lighted city streets. Can you take a photo of your lighted LED lights using the same
Pose as my image?

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