RE: [DML] Re: Headlight switch savers
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [DML] Re: Headlight switch savers

By the way, driving an incandescent light with a relay or switch is not as simple as it sounds. A cold filament in a light bulb (i.e. when the bulb is off)  will draw around 10 - 12 times the amount of current it draws when hot, i.e. "on". 

No joke. The surge current on an incandescent light is more severe than with an inductive load!

Joe Kuchan

To: dmcnews@xxxxxxxxxxxxxxx
From: hmcelraft@xxxxxxx
Date: Thu, 4 Jun 2009 14:11:32 +0000
Subject: [DML] Re: Headlight switch savers


      I did this very thing some 20 years ago to my 3354 so I could get a marker light flash with my alarm - I realized when I set it up that I was removing a lot of amperage from the light switch. Same relays (OEM's in the relay compartment), original light switch, so far, and 60,000 miles later.

Harold McElraft - 3354

--- In dmcnews@xxxxxxxxxxxxxxx, Marc Levy <malevy_nj@...> wrote:



> With all the talk of relays wearing out instead of the switch itself due to the amount of current draw, I am surprised none of the vendors sell a dual relay kit.


> The left side and the right side of the car are electrically isolated by fuse #2 and #8.  It would be incredibly easy to install 2 relays in line with those fuses such that a separate relay controls each side of the car.  This would also relocate the relays to the "relay compartment" instead of hidden behind the center console.






Windows Live?: Keep your life in sync.

[Non-text portions of this message have been removed]


To address comments privately to the moderating team, please address:

For more info on the list, tech articles, cars for sale see

To search the archives or view files, log in at! Groups Links

<*> To visit your group on the web, go to:

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    (Yahoo! ID required)

<*> To change settings via email:

<*> To unsubscribe from this group, send an email to:

<*> Your use of Yahoo! Groups is subject to:

Home Back to the Home of PROJECT VIXEN

Copyright 2006  All rights reserved.

Opinions expressed in posts reflect the views of their respective authors.
DMCForum Mailing List Archive  DMCNews Mailing List Archive  DMC-UK Mailing List Archive