Welcome to the North American Subaru Impreza Owners Club Friday December 19, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Electrical & Lighting

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 01-29-2003, 04:53 PM   #1
ImprezedRS
Scooby Specialist
 
Member#: 2771
Join Date: Oct 2000
Location: Charlotte, NC
Vehicle:
2003 BMW Z4
Blue

Default Catz Zeta?

I was wondering how does this work, from what I hear is it just boosts the power from like 12v to like 15v. Is that true, also if it is then I could basically make my own for cheap then from parts from Radio Shack. Has any one taken theres a part?
* Registered users of the site do not see these ads.
ImprezedRS is offline   Reply With Quote
Old 01-30-2003, 03:42 PM   #2
ImprezedRS
Scooby Specialist
 
Member#: 2771
Join Date: Oct 2000
Location: Charlotte, NC
Vehicle:
2003 BMW Z4
Blue

Default

bump, i know somebody has to know
ImprezedRS is offline   Reply With Quote
Old 01-30-2003, 07:16 PM   #3
rory-wrx
Scooby Newbie
 
Member#: 26303
Join Date: Oct 2002
Location: Niwot, Colorado
Vehicle:
2003 WRB GGA w/ 5MT
I can see clearly now...

Default

This is basically a DC-to-DC converter that steps up the voltage supplied to the headlights from 12 to 15 VDC. The price of this system (~$275) doesn't suprise me as DC-to-DC converters with enough capacity to power the headlights would, by themselves, be quite pricey. I don't think you can get these at Radio Shack.

Besides the price, there is another issue to consider. By boosting the voltage you will indeed boost light output (& color temperature), but you will also dramatically reduce your bulb life. Bulb output at 15VDC will be about 220% of that at 12VDC but bulb life will be only about 7% of what you would get at 12VDC. The only way to get around this is to go with bulbs rated at 15VDC, but then you loose all the brightness advantage.

As Dr. Eldon Tyrell said in Blade Runner, "The light that burns twice as bright, burns half as long." Its actually lots worse than this --- brightness is proportional to the ratio of the applied to design voltage raised to the 3.5 power; bulb life is proportional to the ratio of the design to applied voltage raised to the 12th power!
rory-wrx is offline   Reply With Quote
Old 01-30-2003, 08:39 PM   #4
Mulder
Trust no one
Moderator
 
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 WRX
15 WRX/05 GTO

Default

Want to do something to improve the light output from your existing bulbs that won't harm them and is cheap? Try adding some relays to switch them to a direct ground rather than the lossy grounding system Subaru uses. On my '02, I measured a 1.5 volt drop on the ground side with stock wattage lights and that is an awful lot. It's probably similar on an '00 since the circuitry is essentially the same. Eliminating this drop to provide full available voltage to the headlights will make a noticeable difference in light output.
For a demonstration, identify the low beam switched ground wire on the connector for your driver side headlight (be sure you have the right wire!). While the low beams are on, take a short jumper wire of decent gauge (12 is good), touch one end to that pin on the headlight connector and touch the other end to the negative terminal on the battery. You will see the light get brighter.
Mulder is offline   Reply With Quote
Old 01-31-2003, 04:42 PM   #5
rjones
Scooby Newbie
 
Member#: 1477
Join Date: May 2000
Location: Cambridge, MA
Vehicle:
2003 wrx wagon
silver

Default

rory-wrx -

that was the ragest explanation of bulb life I have ever heard. Way to work in the blade runner quote.
rjones is offline   Reply With Quote
Old 01-31-2003, 05:38 PM   #6
ImprezedRS
Scooby Specialist
 
Member#: 2771
Join Date: Oct 2000
Location: Charlotte, NC
Vehicle:
2003 BMW Z4
Blue

Default

yeah that was a good explanation. I don't think I will go with this anyways I knew the life of the bulb was going to drop but not by that much though. I went to this webpage that explains a lot of stuff on car headlights and I figure I'm going to try a LED lighting system. I know it will be expensive but ohwell its only money.
ImprezedRS is offline   Reply With Quote
Old 07-07-2003, 03:03 PM   #7
exhacker
Scooby Newbie
 
Member#: 33725
Join Date: Mar 2003
Chapter/Region: South East
Vehicle:
2008 Impreza WRX 5dr
Black

Default

Can someone post some pics and instructions for the headlight grounding mod (or links). thanks
exhacker is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
catz zeta lighting system? bayWRX Interior & Exterior Modification 7 04-23-2001 08:33 AM
How did you mount your HID / Catz Zeta Ballast ? DEVO-2nd GEN Interior & Exterior Modification 9 04-20-2001 01:52 AM
Opinions on Catz Zeta headlamp bulbs? Robmat Interior & Exterior Modification 2 03-27-2001 10:12 PM
Headlamp Question / About Catz Zeta SiriBX General Forum Archive 0 01-31-2001 11:03 PM
Anyone is runnig the CATZ ZETA kits? V6 Interior & Exterior Modification 1 12-28-2000 03:06 AM


All times are GMT -4. The time now is 12:52 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.