Toggle Content Welcome Guest! Please Register or Login Wed July 18, 2018, 4:43 am
Toggle Content Main Menu

Toggle Content Recent Posts
Last 10 Forum Messages

NASA AZ @ Bondurant : April 21-22, 2018
Last post by ramen3pm in GTGs, Sightings and Events on Mar 31, 2018 at 22:25:16

1998 740Il no start no crank
Last post by sbadger in The Garage on Feb 05, 2018 at 12:10:35

Jumped timing on '97 540i NON-VANOS engine?
Last post by m-az in 5-8 Series on Jan 29, 2018 at 20:41:42

WTB Momo or mtech steering wheel 4 E30
Last post by frontin40 in Classifieds/Wanted on Nov 21, 2017 at 22:08:51

This forum is DEAD!
Last post by laplana325i in General Discussion on Oct 03, 2017 at 22:17:25

Selling VW GTI 1997
Last post by bmw325i in Other Models on Oct 01, 2017 at 00:46:51

FS: E30 back seat SOLD
Last post by meeceboy78 in Classifieds/Wanted on Sep 26, 2017 at 06:19:48

E46 track car manual coupe
Last post by Drift30 in Classifieds/Wanted on Sep 02, 2017 at 20:12:46

E85 where can I get it
Last post by JimsR in General Discussion on Aug 09, 2017 at 22:14:12

FS: E46 M3 KW 2-Way Adjustable Clubsport Coilovers...
Last post by bullfrog in Classifieds/Wanted on Jul 21, 2017 at 00:34:29

AZBMW Forums › Model Specific Discussion › 5-8 Series › Anyone here an electrical guru??
Anyone here an electrical guru??
All things 5, 6, 7 and 8 series
Post new topic    Reply to topic    Printer Friendly Page     Forum Index ›  5-8 Series

View previous topic :: View next topic  
Author Message

Offline Offline
Joined: Apr 02, 2014
Posts: 7
Location: East Mesa
PostPosted: Wed Apr 23, 2014 12:46 am
Post subject: Anyone here an electrical guru??

I have a set of 9led bulbs I swapped into my Ae sockets but they are not as bright as I'd like.. Yes I know about the umnitza upgrade and I don't feel like wasting 150 on lights.. My question is, is there anyway to increase the voltage to the bulb itself maybe via resistor or capacitor inline? I've read that you can safely add about 10% more power then the light is listed at. So I'm hoping to increase the power a bit an make these puppies shine...
Also does anyone have an scrap sheet metal laying around maybe a hood or door or just decent cut off 20"x10"... I'm doing a boser hood to my e39(if you don't like it to damn bad) so I'm trying to get the metal an maybe help someone get a lil scrap outta their yard
Back to top
View user's profile
Cone Killer
Cone Killer

Offline Offline
Joined: May 25, 2011
Posts: 604

PostPosted: Thu Feb 05, 2015 3:00 pm
Post subject: Re: Anyone here an electrical guru??

problem you will likely run into is that the car is on a 12v system. Without running some kind of transformer, you wont ever get more than 12v out of the electrical system. What I would suggest is ensuring your grounds and wiring is in PERFECT shape, so you aren't squandering that 12v on bad connections. Any resistance in those connections eats away at the power that you have available for your lights.

A resistor is just that, it resists the flow of electricity. That would have the opposite effect that you desire. A cap also wont help, as it is a storage or more appropriately a buffer for electrical systems. this will also not add power to your system. neither one will have the desired effect for you


VANOS: Going Full Retard since 1993...

1998 740iL (SchlactShiff)
Back to top
View user's profile

Offline Offline
Joined: Apr 02, 2012
Posts: 128

PostPosted: Fri Feb 06, 2015 1:58 pm
Post subject: Re: Anyone here an electrical guru??

Don't forget that your electrical system is running closer to 14.4v, vs the specified 12v specs of most LEDs. That means that you've likely already eaten up that output difference.

You would be best suited changing to different LEDs that are engineered for the load and output you desire, opposed to trying to run the current ones at the edge, or outside, of their tolerance. Unless an engineer bench tested these @ 14.4v plus the 10% load increase for xx,xxx hours and published a data sheet with the new specifications (including Luminous Intensity, Viewing Angle, Forward Voltage, Typical Current etc) and expected service life then I would say it is probably safe to assume that it is just a clueless guy that hacked up the lights and hasn't caught his car on fire....yet.

All that increase will do is reduce the service life of the lights and you could run the risk of burning/melting/igniting the base, wiring or even worse, the headlamp. It does not make sense to do it any other way than the right way, to me (especially the potential disaster expense over a cheap part).

I know that it isn't what you want to hear but you have to remember that these companies employ people to test and break them in order to ensure that the least amount of failures occur and they achieve optimum lifespan at the specified Kelvin rating. I work around these things all day and don't want to see your next thread read "E39 doing weird things...electrical gremlins" or "So, my E39 caught fire today" or perhaps "Angle eyes stopped working, can't get bulb out indicator to go off, even with OEM bulbs."

There's a lot of support out there for LCI E39 angle eye upgrades, just ask around and search for the bulbs that meet the output you desire and fit within your budget.

Back to top
View user's profile
Display posts from previous:   
Post new topic    Reply to topic    Printer Friendly Page    Forum Index ›  5-8 Series
Page 1 of 1
All times are GMT - 7 Hours

Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

This Theme Ported By: WebSiteGuru Designs. Original Author: Lorkan Themes