Adding a siren, wiring question...
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This is a discussion on Adding a siren, wiring question... within the Interior Mods forums, part of the Tech & Modifying & General Repairs category; I am adding a siren to my 2003 WRX and was looking for input on wiring. I am confused where ...

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    Question Adding a siren, wiring question...

    I am adding a siren to my 2003 WRX and was looking for input on wiring. I am confused where to get these power connections:

    Red Lead: Connect the red wire from the amplifier to positive 12VDC. It is strongly recommended that you connect to a 12VDC source that is present only when the vehicle ignition is in the on position. A power relay may also be used. Be sure to use a minimum size #16 AWG wire.

    Yellow lead: Connect to +12VDC through a switched power supply (possibly iginition). This will turn the siren on and off. Be sure to use a minimum size #18AWG wire

    Orange Lead: This lead supplies power for the backlighting of the siren. Connect it to +12VDC from the dash lights, parking lights or other switched source. Be sure to use a minimum size #18AWG wire.

    Could these all be taken from the same source? What would be the best place to pull power off for these wires? I could use any help you guys could give.

    Thank you!

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    Moderator timber's Avatar
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    Quote Originally Posted by timber View Post
    Moved to Cockpit and Cabin

    Sorry about that, I looked for a better place and couldn't locate it. I didn't look hard enough

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    where does the siren go?

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    The siren (control/switch box) goes in the interior. I am thinking about attaching it to the vertical wall of center console on the passenger side (footwell). I was thinking about taking the power for the yellow and orange off of the lighter/outlet since it's switched and close by. I just don't know about taking the main power (red wire) off that also or of there is a better place to get those power. I will have a low power device (led warning lights) plugged into the lighter/outlet.

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    Moderator timber's Avatar
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    The easiest way for a direct power line might just be to run a fused line right off of the battery and through the firewall grommet.
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    Quote Originally Posted by timber View Post
    The easiest way for a direct power line might just be to run a fused line right off of the battery and through the firewall grommet.
    what abouta switched power line?

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    Moderator timber's Avatar
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    Quote Originally Posted by efmd3 View Post
    what abouta switched power line?
    I think he said he wanted to run off of the lighter.
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    I don't know why it sas that the main power should be switched as well (ignition). I hooked it up to a battery and it will not function with just the red and black hooked to the battery. The yellow must also be hooked up to the positive. I think I will just pull power off the battery for the red and put the other two to the lighter power. Does this seem like it will cause any problems?

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    Moderator timber's Avatar
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    Quote Originally Posted by jvic View Post
    I don't know why it sas that the main power should be switched as well (ignition). I hooked it up to a battery and it will not function with just the red and black hooked to the battery. The yellow must also be hooked up to the positive. I think I will just pull power off the battery for the red and put the other two to the lighter power. Does this seem like it will cause any problems?
    You should be good as long as you are not pulling more ampreage than what the circuit is rated for.
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    Moderator timber's Avatar
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    Quote Originally Posted by jvic View Post
    I don't know why it sas that the main power should be switched as well (ignition). I hooked it up to a battery and it will not function with just the red and black hooked to the battery. The yellow must also be hooked up to the positive. I think I will just pull power off the battery for the red and put the other two to the lighter power. Does this seem like it will cause any problems?

    I'm not much of an electrics guy, but it seems to me that the last stereo I installed was the same way.
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