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» Termpro Audio Forum » Installer's Corner » Installation Tips, Tricks, & Techniques » anybody have any info how to keep the radio on in a car until door opens?

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Author Topic: anybody have any info how to keep the radio on in a car until door opens?
Luin Haden
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Car: 1998 Chevrolet Tahoe

Radio: Factory

Question: Customer wants the Factory radio to stay on until a door is open. Does anyone know a website or person that could help me.

Please help they want to do it Monday.

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Posts: 3058 | From: Nixa, MO | Registered: May 2000  |  IP: Logged | Report this post to a Moderator
Notloudenuf
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That's factory stuff for this year at least in a 2000 GMC Sonoma truck.
It would probably be something like wiring into the door pin switch. You would leave the radio power lead on with the ignition off (a constant hot) and when the door is opened the switch is opened thus turning your radio off until power is supplied again.

I know its more complicated than that but maybe what I said will get some brainstorming going on.

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nis720
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I saw that in a 98 S-10 with a alpine radio, I thought it was so cool, Factory option.

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[This message has been edited by nis720 (edited 04-06-2001).]


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Luin Haden
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Thanks for the quick reply....

I want something that I know for sure won't "burn up". Is there some kind of module that will alow this to take place?

Thanks

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teamROCS010
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Relays Luin, relays. You can either spend big bux on a Latching relay, so that it turns on when you hit the key, and then OFF only after key is off AND door is opened. OR you can do the same thing using multiple Bosch relays.

I don't have time to sit down and draw it up for you, but it's not real hard, and if you have experience with relays you should be able to do this yourself in no time.

Let me know if you still need the info later this evening (via email preferably) and I'll try to get you rolling.

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Kevin Smith
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Mabeita
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Two relays:
First relay:
Terminal #85 = Remote out of radio
Terminal #87 = +12v constant(fused)
Terminal #87a= +12v accessory
Terminal #30 = Radio accessory input and terminal #85 on second relay
Terminal #86 = Terminal #87a on second relay

Second relay:
Terminal #87 = open
Terminal #30 = Chassis ground
Terminal #86 = Door pin(ground)input

That should work.

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Brian46012
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quote:
Originally posted by Mabeita:
Two relays:
First relay:
Terminal #85 = Remote out of radio
Terminal #87 = +12v constant(fused)
Terminal #87a= +12v accessory
Terminal #30 = Radio accessory input and terminal #85 on second relay
Terminal #86 = Terminal #87a on second relay

Second relay:
Terminal #87 = open
Terminal #30 = Chassis ground
Terminal #86 = Door pin(ground)input

That should work.


The way I understand that, won't the radio come back on when you close the door??? Please explian. I have a lot of experience with relays, just not that application. thanks


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Mabeita
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No, the original power for the first relay comes from the remote output of the radio. When the second relay is activated by the door pin, causing a loss of ground to the first relay, the radioi can no longer supply power out and since the key is off the radio is off as well.

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Posts: 1706 | From: Phoenix, AZ USA | Registered: Feb 2001  |  IP: Logged | Report this post to a Moderator
minimike!
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I have one thats simalar but uses the accessory at the ignition switch harness that powers the radio:
1st relay:
87&86-accessory from ignition
30-terminal 30 of other relay
85-ground
87a-blank

2nd relay:
30-terminal 30 of 1st relay
87a &86- +12v constant
85-door pin (ground)input

thats what I came up with awhile back, and I've used it with success and it gave the vehicle the ability to roll up the windows after the ignition was off too.
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[This message has been edited by minimike! (edited 04-08-2001).]


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Mabeita
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minimike,
According to your note, there is a slight problem with your layout, the second relay will not keep the radio active unless you open the door before you turn off the key, there will be a short dropout between the time you turn off the key and when you open the door. Your circuit will however activate all the accessory circuits in the vehicle every time the door is opened.

Just noticing.

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Slick
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Or you could talk the customer into a Clifford alarm as well Just kidding, but that is an option on my Solaris, I like it alot actually.

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Jason Barreca
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minimike!
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Well Mabeita I could have typed the wrong thing in but it has worked correctly for me and I plan on putting it in my own vehicle, so I'll let you know if it works, but the first relay latches from the 12v constant after the key is shut off and the second relay breaks the constant when the door is open disabling the latch, however I wrote it down after I did it the first time and may have wrote something wrong, but after looking it over it still seems like this is right, but I'm not doubting your knowledge, just explaining myself.

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DrHertz
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The diagram I have uses two relays and a 6amp diode, it will turn the relays on as soon as ignition is on, regardless of the door being open, and stay on after key off until the door opens, I'm looking right now.

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Shaughn Murley
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dizzyside
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I am sorry if this sounds Dumb, but when you turn the car off and remove the key fro mthe ignition doesn't the radio turn off? So why would you need to have s set-up to trun the radio off once you open your door.

Also, if you open you door without shutting you car off your radio turns off, wouldn't you then need to restart your car to turn your radio back on?

If someone could clear this up for me it would be nice. The reason that I am asking is because I work at a stereo shop, and a customer asked for this and we wouldn't do it for him.

Jason

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Mabeita
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Part of the recent GM factory cvonvenience options concern accessories that remain active until you exit the vehicle. This option allows accessories like windows and radios to be operated until you physically exit the vehicle, in the event that you forget to roll up the windows or are trying to hear the last bit of a news story or song, the necessary devices stay active. The devices will automatically turn off as soon as you open the door, exiting the vehicle. This is an additional supply of power and does not interrupt the normal operation, therefore it only affects the key-off operation of the accessories.

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KRMFiero
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hmm i think i'll go do that to my fiero, i have two relays liyin around... just one quick question if ignition is on and the door is open will the radio come on? from the looks of it it will but just want to cheak

Kyle


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Mabeita
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quote:
Originally posted by minimike!:
Well Mabeita I could have typed the wrong thing in but it has worked correctly for me and I plan on putting it in my own vehicle, so I'll let you know if it works, but the first relay latches from the 12v constant after the key is shut off and the second relay breaks the constant when the door is open disabling the latch, however I wrote it down after I did it the first time and may have wrote something wrong, but after looking it over it still seems like this is right, but I'm not doubting your knowledge, just explaining myself.


No need to explain yourself, I realized that the error was in what I read not in what you wrote. Your configuration will work just fine. Sorry for the earlier conflict.
L8,
Mike

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Mabeita
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quote:
Originally posted by KRMFiero:
hmm i think i'll go do that to my fiero, i have two relays liyin around... just one quick question if ignition is on and the door is open will the radio come on? from the looks of it it will but just want to cheak

Kyle


With either diagram, the only way the radio will turn on is if you turn it on first.

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Posts: 1706 | From: Phoenix, AZ USA | Registered: Feb 2001  |  IP: Logged | Report this post to a Moderator
   

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