relay with tv tuner

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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=101727
Printed Date: June 29, 2025 at 12:23 PM

Topic: relay with tv tuner

Posted By: audioman2007
Subject: relay with tv tuner
Date Posted: January 30, 2008 at 8:25 PM

I have a TV tuner. With that tuner, I have 4 antenna's each of which have boosters which I have powered. I also have a dvd player that works with the tuner. I have a passenger visor monitor. The 4 antenna's have a switch I installed to turn them on. The dvd player has its own switch that I installed and so does the monitor. I use a remote to turn on my tv tuner but must switch over those switches. Is there a way to tie all of these accessories into the tuner by using a relay so that when I turn on the tuner with the remote, everything else also turns on? Here are the wires that run to the tuner: battery+, ground, rear view camera on (dont need), break parking (dont need), and acc B+.

Replies:

Posted By: hotwaterwizard
Date Posted: January 30, 2008 at 9:51 PM

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: hotwaterwizard
Date Posted: January 31, 2008 at 8:24 PM

Relay Tutorials

https://saft7.com/?p=234

https://www.eurekaboy.com/f250/relay101.htm

https://www.radioshack.com/product/index.jsp?parentPage=family&summary=summary&techSpecs=techSpecs&currentTab=techSpecs&cp=2032058.2032230.2032277&custRatings=custRatings&features=features&accessories=accessories&productid=2062477&support=support&tab=summary

Radio Shack has one available
12VDC/30A SPST Automotive Relay
$6.79 Model: 275-226
Catalog #: 275-226

https://rsk.imageg.net/graphics/product_images/pRS1C-2160386w345.jpg

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: hotwaterwizard
Date Posted: January 31, 2008 at 9:04 PM

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: hotwaterwizard
Date Posted: January 31, 2008 at 9:15 PM

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: audioman2007
Date Posted: February 01, 2008 at 10:02 AM

Ok I think I understand it now. I need to cut the wire for the remote sensor. Run the sensor side to pin 85. Run the tuner side of that wire to pin 87. Plus run the power wires for the dvd player, tv monitor, and antenna booster's to pin 87. I run pin 86 to ground. I fuse pin 30 and run to a constant 12 volts. Am I correct on all this?

Posted By: hotwaterwizard
Date Posted: February 01, 2008 at 10:23 PM

Bingo

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: audioman2007
Date Posted: February 02, 2008 at 8:55 AM

Just one more question then.... When I cut the remote sensor wire that leads to the tuner, how many wires will be inside?

Posted By: hotwaterwizard
Date Posted: February 02, 2008 at 10:44 AM

Don't cut it !

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: hotwaterwizard
Date Posted: February 02, 2008 at 10:48 AM

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: hotwaterwizard
Date Posted: February 02, 2008 at 10:52 AM

Lets re think this. you need a switch that will turn on the other devices when you use your remote right?

Each one you turn on will have an audio output. Just hook in an audio switch on the audio output and hook the relay to that device.

https://www.crutchfield.com/App/Product/Item/Main.aspx?search=audio+switch&i=136CLSES

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: hotwaterwizard
Date Posted: February 02, 2008 at 11:56 AM

PAC Audio TR-4

Senses voltages as low as 0.8 volts and gives you a 12 volt output with a one second delay. Trigger off of speaker leads or +5 volt remote wires.
• Add a remote turn on for aftermarket amplifiers in vehicles without a factory remote wire.
• Eliminates turn on pops in amplifiers.
https://www.pac-audio.com/products/productsCatagory.asp?mmSearch=Trigger%20Modules

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: audioman2007
Date Posted: February 02, 2008 at 1:04 PM

No those wont work. I was just thinking of something. What if I cut the remote wire. Run the sensor side to pin 86. From pin 30 I would run the tuner side of the remote wire, run the power wire for the dvd player, power wire for the antenna boosters, and the power wire for my tv screen. I would ground pin 85 and run pin 87 to a constant 12 volt +. Would that work?

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