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# 78090 26-Feb-2011 21:13
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LED DRL's... I have the LED strips, but I want to hook them up so that they comply with LTSA's regulations..

  DRL LED's MUST turn off when the park lights or headlights are turned off.

Hows the easiest way to do that?





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  # 443753 26-Feb-2011 22:37
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Power them off the parklight circuit

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  # 443764 26-Feb-2011 23:23
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I thought they must be off when the parks are on?

The compliant ones have a connection to the park circuit to turn them off. You could do the same with a double throw relay powered by the park circuit and connect the power to the lights thru the normally closed pole of the relay




Richard rich.ms

 
 
 
 




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  # 443766 26-Feb-2011 23:36
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richms: I thought they must be off when the parks are on?

The compliant ones have a connection to the park circuit to turn them off. You could do the same with a double throw relay powered by the park circuit and connect the power to the lights thru the normally closed pole of the relay



see thats what I thought.. So I was trying to remember if the LED's on the new Audi's turn off when their headlights are on... but I cant for the live of me remember it or not. My mate swears they stay on.. So I don't want to install mine unless I am doing it correctly and legally.







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  # 443768 26-Feb-2011 23:42
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SORRY ALL. TYPO IN OP.

It is meant to say LED's are to be turned off when the headlights or fog lights are ON





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  # 444279 28-Feb-2011 22:12
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You'll need a transistor and relay. Or a grunty transistor might even cut it depending on amperage draw. From a rusty memory: probably a PNP connected to the headlight circuit so when it's triggered it flicks the relay off. Ask a guy with thick glasses at DSE (or even better Jaycar these days) and he'll draw you a circuit diagram in a jiffy.

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