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pioneer head unit question

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=42188
Printed Date: May 18, 2024 at 8:39 AM


Topic: pioneer head unit question

Posted By: Detour
Subject: pioneer head unit question
Date Posted: November 03, 2004 at 4:00 PM

I'm surrently wiring lights onto my car but I would like to use the stereo as a cut off switch.  Which wire do I tap into on the headunit to only get power when the face is on?



Replies:

Posted By: jeffchilcott
Date Posted: November 03, 2004 at 4:40 PM
your remote wire, but that wont supply enough current to run any lights.    You will have to run a relay with a 12 volt source

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Posted By: Detour
Date Posted: November 03, 2004 at 4:48 PM
What I was thinking of doing too was running the power wire from the fuse box to the toggle switch then to the head unit then to the lights.    [fuse box] --> [toggle] --> [h.u] --> [lights]  Dont know if that would change anything.  And the lights are federal signal police issue wigwags if that matters.



Posted By: DYohn
Date Posted: November 03, 2004 at 4:55 PM
No, that's not a good idea.  Chances are the lights will induce lots of noise into the power wire and thus into your HU.  Plus, it is never a good idea to use a toggle switch for a load like lights that can draw significant current.  Like Jeff suggested, your best bet is to use a relay and trigger it off the remote-on signal from the HU.

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Posted By: Detour
Date Posted: November 03, 2004 at 8:02 PM

Even though they only use 10 amp loads?




Posted By: dpaton
Date Posted: November 03, 2004 at 10:30 PM
10A is a lot of current. Most switches are only rated for 1 ro 2 or 3, mayve 5A on a good day. Anything over 1A really wants a relay to prevent arcing and to keep the current in the fat wires and contacts, not in the wimpy ones inside a switch.

-dave

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