radio on till door open

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=71938
Printed Date: May 14, 2025 at 1:55 PM

Topic: radio on till door open

Posted By: ydg1
Subject: radio on till door open
Date Posted: January 31, 2006 at 9:13 PM

i whould like to have my radio stay on till i open my door.i once found a post on that topec can't find it now.could someone tell me where that post is or how to do it.
thank
josh

Replies:

Posted By: downstarinc
Date Posted: February 01, 2006 at 12:26 AM

https://www.the12volt.com/relays/page5.asp

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jl audio..nuff said

Posted By: ydg1
Date Posted: February 01, 2006 at 8:44 AM

thank i look at that and here is the question why wouldn't the radio go back on when is close the door and the relay is complete again.

Posted By: ydg1
Date Posted: February 01, 2006 at 8:50 AM

ydg1] wrote:

thank i look at that and here is the question why wouldn't the radio go back on when the door is close and the relay is complete again. also could i do the same thing for other aux thing i have in the car.

Posted By: blazinred99
Date Posted: February 01, 2006 at 11:57 AM

It is a latching relay-

When the relay coil gets power it switches and when it switches it sends 12 volts into the coil which keeps the coil powered until you break the wire which is what the door trigger does. It breaks the connection and it cant get power again until the car is started. it is hard to explain in words but when I get a chance i could draw a picture.

Posted By: ydg1
Date Posted: February 05, 2006 at 3:59 PM

I don't understand what you are saying. Why wouldn’t the radio go back on?
also do I cut the wire that is going in to the radio from the car or do i just tap in the wire from the relay.

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