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Wiring LEDS for car lights. Need assistance.

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Blis

New Member
Alright, so I made a custom set of the BMW Angel Eye lights for my sports car, and am now trying to wire them properly. The setup that I'm trying to do, is so that I can turn on the inner and outer rings separately, but then also turn them both on simultaneously. I'm hoping to do this without wiring a second switch, but not fully sure that it's possible. Below is a picture of the setup.



Any help is greatly appreciated!

Thanks!
Greg
 

MikeMl

Well-Known Member
Most Helpful Member
The solution has to do with what kind of switch you can obtain. You basically need a four detent switch which could be wired to provide: Nothing, Inner, Outer, Inner & Outer. I have never seen an automotive style pull-switch with four detents. A three detent switch would could be wired to provide: Nothing, One, Both; where One could be either Inner or Outer.

How much current do the lamps draw?
 
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Blis

New Member
It's not lamps. LED's. High output. 960mlm intensity, 525nm wavelength, 20mA current, 3.5v supply. Those are attached to 470ohm resistors.
 

MikeMl

Well-Known Member
Most Helpful Member
So how many LEDs are you switching?

Any insight on the mechanical configuration of the switch?
 
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Blis

New Member
each ring has 2 led's, so each line will have 2 leds and 2 resistors attached to it. I'm curious as to what type of a switch I need so I can set it up for Nothing, Outer lights, Inner lights, Both lights.
 

Sceadwian

Banned
If you do two LED's in series you can use a small current limit resistor disipating less heat and generally wasting less power. At 12 V DC you'll be burning 300mw's in the resistors. If I'm not mistake the resistor value for two 3.5 LED in series at ~20ma is 160ohms and it would only dissipate 100mw's
 
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