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  • Member For: 20y 4m 15d
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  • Location: Gold Coast
  bkofoed said:
So to clarify you would have the Capacitor in parallel with the LED globe array:

GND------LED array--\---------  (  Brake switch  ) -----------  +12

GND------I|+----------/

  1000uF/25v  Electrolytic cap

On triggering the Brake, the cap will initially be 'seen' as a very low resistance path while the electrolytic charges, and high resistance some milliseconds later as it approaches full charge.  The charge flow to a cap such as this with no series limiting resistor is very quick, in the order of milliseconds, so it would not cause a detectable delay to the brakes lighting.

On the release of the Brake, the now charged cap will keep the 12v across the brakes LED's for a brief period while it discharges.  The low current requirements of LED's means you may get a half second or so soft fade out after each braking activity.

Can't wait for someone to try it!

BK

<{POST_SNAPBACK}>

Although, depending on the current draw as the Cap charges with no current limiting resistor, you may take out your brake light fuse :laughing:

Just be ware that this may happen.

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I'm not certain the Cap solution would work.

The system would be looking for the +12V from the unearthed lamp, a Cap would not provide that, as similarly, the LED does not ??

Whomever tries, keep us updated :-)

Alan

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You won't be blowing any fuses charging a 1000 uF cap. Your average single-din low power car cd/tuner has much more than that across the supply. A 1 Farad however, being a million times more storage, would be a different story!

Also, I would have thought that the tail-light cluster has all lights Earthed to the chassis- I.e. common ground, with a switched 12v line coming from the Brake switch/Indicator circuit etc.

BK

  • No boost, no bottle, just my foot on the throttle!
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  XRBloke said:
On another note, can you take some pics of what they look like with the LEDs Zap, do they spread the light very well in the tailight cluster?

Cheers!

<{POST_SNAPBACK}>

I will see if I can get a picture tonight.

It looks awsome as the globe has 48 LED's that gives a great spread of light.

I also have reverse lights, that are heaps brighter.

I want to do indicators, but I will need to change the flasher can for a LED one, but with all the cars electronics, who knows what this will break.

Thanks to everyone for the help in trying to sort this stuff out. :stirthepot:

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  PozzE said:
I can post the circuit diagram in question if any ones wants it....

However, mods am I alowed to do this???

better ask before getting into trouble

<{POST_SNAPBACK}>

I don't think you can get into trouble for posting a circuit diagram.

  • No boost, no bottle, just my foot on the throttle!
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  • Member For: 21y 2m 17d
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Ok, Got the pics of the LED's.

One thing I noticed is the reverse and tail lights are on when the ignition is on, but nothing else. I guess this is due to circuit leakage as LED's do not need much power to run,

1st pic is just with ignition on

post-3469-1140776123_thumb.jpg

2nd pic is parkers only

post-3469-1140776255_thumb.jpg

3rd pic is brakes on

post-3469-1140776309_thumb.jpg

4th pic is reverse lights and parkers.

post-3469-1140776329_thumb.jpg

All I have is LED tail lights, reverse and number plate.

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