Viper 791xv, 2 LED’s, Only One Working

ok so today I thought I would try hooking up an extra red LED  that I had laying around ( I forget which model alarm it came from ) with my bright blue LED that comes with the Viper791xv. 

On the bright blue LED from the 791xv theres a blue wire and a red wire. On the red LED that I had laying around theres also a blue wire and a red wire. I tapped the red LED wires into the wires that are on the blue LED and matched them up. Blue wire to blue wire, and red wire to red wire.

I arm the alarm but only the red one flashes. The blue one flashed before the red one was even hooked up.

Reason why I want two LED's is so I can have one ( the red one ) up in the corner of my windshield where my headliner and windshield meet. The other ( the blue one ) will be inside the car mounted near the radio.........

So my question is why is only the red one blinking and not the blue one?

How do I get both to blink.......?

mobilecustoms wrote:

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you have to wire them in series

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Just double checking........................should I hook them up like this??

The reason the blue one doesn't work when you have both in parallel is because the blue one requires more forward voltage than the red one, and if you wire them in parallel only the red one is getting enough voltage to emit light. 

Putting them in series MAY work, but it's going to depend on the combination of LED's and the alarm output circuit.  Probably worth a try, it certainly won't hurt anything.

Your other option is to use a relay.  I can't remember for sure, but I believe DEI alarms pulse 0V on the LED blue wire, which you could use to drive a relay.  The 2nd LED, in series with the appropriate resistor (200-600 ohms would be a starting guess), would be the load applied to the relay.  I wouldn't recommend a normal DEI relay for this purpose, something smaller that draws less current would be more ideal.  If you know what you're doing, check out www.mouser.com, if not, perhaps Radio Shack can help.