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LED brake light upgrade...

Started by CRUISN, May 31 2012 07:55 PM

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#1 CRUISN

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Posted 31 May 2012 - 07:55 PM

Something Ive been meaning to do for a while, upgrade my rear high mount brakelight to LED.

Plug in LED's in place of the oem bulbs dont cut it due to not enough light spread and it looks shit.

Custom FTW. :D

PCB (printed circuit board), 20 super bright red LEDS and a little electronic know how. :wink:

Im running them in 4 banks of 5 LED's in parrallel (5 LEDS left to fit, Jaycar ran out), each LED needs 2.1V for optimum output. 5 x 2.1 = 10.5V. Average car ouput when running is 13.8V. To take care of the extra 3.3V, a 110 Ohm resistor on the end of each bank is fitted in series so they run at optimum level and maximum life.

Theyre bright. :D

OEM 4 bulb setup...

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New LED setup... (one bank left to solder in)

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Mounted with test leads...

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Yep, theyre bright....

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#2 Adam

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Posted 31 May 2012 - 08:00 PM

Ha! I've thought about this a few times! Never bothered though.

Nice one!

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#3 CRUISN

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Posted 31 May 2012 - 08:02 PM

$65 mod. :D

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#4 RX25SE

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Posted 31 May 2012 - 08:03 PM

Clever trick Mark.

Is that a power board with a temp controlled soldering iron and regulated power supply?????

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#5 CRUISN

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Posted 31 May 2012 - 08:04 PM

Its a test bench at my work.

Has a variac for both AC and DC supplies, plus all the other usual stuff. Its handy. :D

The soldering iron on it is SHIT!

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#6 Adam

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Posted 31 May 2012 - 08:15 PM

Reckon you could put a wiring diagram up when you get time?

Tried to scope it out. But can't work it out :P

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#7 CRUISN

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Posted 31 May 2012 - 08:17 PM

Yeh mate will do over the weekend.

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#8 Adam

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Posted 31 May 2012 - 08:19 PM

Sweet as! Cheers!

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#9 Xon

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Posted 31 May 2012 - 09:04 PM

Looks good Mark!

I would have gone to the kitchen, collected a brown bag, dropped my dacks, pinched off a loaf in said bag, done up dacks, stickytaped bag, placed bag in envelope, and mailed it right to your face for being such a tool.


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#10 lockstock

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Posted 31 May 2012 - 11:12 PM

Simple yet effective, nice

#11 Alex

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Posted 01 June 2012 - 07:33 AM

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Nah... Clever :)

Nice work Mark

#12 Richo

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Posted 01 June 2012 - 10:02 AM

The soldering iron on it is SHIT!

Looks like one of those $15 tricky dicky specials.

Stuff goes here

#13 legacy rsk

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Posted 01 June 2012 - 11:08 AM

but they are not centred mark,sorry just read it again and noticed there is one more bank to go in :dash2:

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#14 Alex

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Posted 01 June 2012 - 11:09 AM

I don't think that Mark would leave it quite unfinished like that, Shane :)

#15 legacy rsk

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Posted 01 June 2012 - 11:10 AM

I don't think that Mark would leave it quite unfinished like that, Shane :)

i just corrected my post alex thanks

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#16 CRUISN

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Posted 01 June 2012 - 05:27 PM

but they are not centred mark,sorry just read it again and noticed there is one more bank to go in :dash2:


Yeh, Jaycar had no more LED's. I took their last 15. They'll have more in on Tuesday so I can finish it off then.

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#17 Xon

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Posted 01 June 2012 - 08:32 PM

If you need www.ledsales.com.au is a good supplier.

I would have gone to the kitchen, collected a brown bag, dropped my dacks, pinched off a loaf in said bag, done up dacks, stickytaped bag, placed bag in envelope, and mailed it right to your face for being such a tool.


It's ok, sometimes when we herp, we also derp.

#18 CRUISN

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Posted 04 June 2012 - 06:44 PM

Circuit diagram.....

Thats for one bank of LED's. This is replicated 4 times.

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#19 Adam

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Posted 04 June 2012 - 08:52 PM

Ah looks so much simpler now :) cheers! So they are just hooked up in series?


Cheers :)

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#20 CRUISN

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Posted 04 June 2012 - 09:03 PM

Yep just in series. Led's total 10.5V(2.1V each)required for optimum output.

The 110 Ohm resistor drops the 3.3V that makes up 13.8V that a car runs at on average. A little higher or lower voltage wont be a problem.

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