[Shotimes] LEDs and lamp out

[Co-Op]

I understand now what the prob is.  That flashing light could be annoying.

You could wire in a regular bulb (or fan, or motor, or any device that would
draw some current) and mount it in the trunk.  I think, then, that a
potentiometer might work.  Dial in enough resistance to keep the lamp out
light from coming on  Could you just remove the brake light from the lamp
out circuit?  I'll look at my wiring diagrams when I get home tonight.

-----Original Message-----
From: Ian Fisher [mailto:dataflash@yahoo.com]
Sent: Tuesday, June 28, 2005 1:36 PM
To: Co-Op; shotimes@autox.team.net
Subject: RE: [Shotimes] LEDs and lamp out


Mike
The LED goes to full bright and off more quickly than
a standard bulb because there isn't a filament inside
that needs to heat up and cool each time power is sent
to the unit. That's one of the reasons I orginally
installed them. That few milliseconds means a lot in
heavy fast moving traffic when you're worried about
someone behind you braking. I always like the "instant
on" from the BMW's, Infiniti's, etc and felt that I
was braking sooner when their tail lamps lit up sooner
vs. standard brake lights. 

Because they have such a low power draw, the car's
lamp out system thinks that the bulbs is "out" and
speeds up the flasher to warn the driver. What we are
doing is looking for a solution around this "sped up
flash rate".

Oh, I also installed them because they look pretty
neat too. :)

Ian


--- Co-Op <Co-Op@schramminc.com> wrote:

> I've heard that LED lights don't actually blink
> faster, but the speed at
> which there bulb goes from off to full bright is
> much quicker than a
> filament bulb.  Think about how a lighthouse looks. 
> That bulb is so big
> that it takes a couple seconds for the filament to
> get hot and glow
> brightly.
> 
> About the dash bulb coming on.  I would either pull
> the warning light out of
> the dash, or change the name of it from light out,
> to brake on.  Kind of
> like a little brake light on the dash.  Could be
> helpful on the track to let
> you know that your foot is resting too heavily on
> the brake pedal.  With
> that, I would like to see a series of LED tapped
> into the throttle position
> sensor to show how far you are pressing the gas
> pedal.  Oh, and a pattern of
> lights to indicate what gear you are in.
> 
> -----Original Message-----
> From: Ian Fisher [mailto:dataflash@yahoo.com]
> Sent: Tuesday, June 28, 2005 12:49 PM
> To: Donald Mallinson; shotimes@autox.team.net
> Subject: Re: [Shotimes] LEDs and lamp out
> 
> 
> A resistor would work but they run very hot. So hot
> that they can burn through trunk carpeting and melt
> plastic. What JVO and I (and others) are doing is
> trying to find a flasher that will work properly. It
> doesn't seem like anything will be plug n' play so
> it
> looks like we will need to build something or rewire
> the stock flash circuit to accept a different
> flasher.
> I have so many other projects (car and life) on my
> plate at the moment that I haven't had much chance
> to 
> play around with it much at this time..
> 
> Ian
> 
> --- Donald Mallinson <dmall@mwonline.net> wrote:
> 
> > Yes, you need a resistor, which is why I don't
> have
> > them on any of my 
> > cars.   I don't have the electircal knowledge to
> say
> > what value you need 
> > on that resistor, but I am sure someone here does.
> 
> > Have you asked the 
> > manufacturer of the bulbs?  Usuall they sell the
> > proper resistor.
> > 
> > Don Mallinson
> > 
> > van Oss wrote:
> > 
> > >With LED brake lights, I'm noticing that the Lamp
> > Out indicator comes on
> > >every time I brake.  Also, the flash rate is
> > faster.
> > >
> > >Both of these effects are because LEDs draw less
> > current than incandescents,
> > >is that right?
> > >
> > >Would both be corrected by inserting a resistor
> in
> > the line to each LED?
> > >How would I calculate the ohm rating of the
> needed
> > resistor?
> > >
> > >Per Herman Anker, my Lamp Out module is already
> > disconnected from the
> > >headlights because of a headlamp harness.  Maybe
> I
> > should just remove the
> > >Lamp Out module?
> > >
> > >VO
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