Relay to Turn On DVD and TV?

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=21136
Printed Date: July 12, 2025 at 4:27 AM

Topic: Relay to Turn On DVD and TV?

Posted By: PuppyDawg
Subject: Relay to Turn On DVD and TV?
Date Posted: November 07, 2003 at 6:03 PM

Sorry for the stupid question ladies and gentlemen, but i'm new to the relay world and never used one.....but i wanted to use a relay to turn my dvd system, and tv once my radio turns on. How can i do this? I'm thinking i should wire the

87 to 12V (amp fuse?)

86 to remote turn on lead

85 ground

30 to the loads with a fuse wire for each individual load (or in this case the dvd system and tv/lcd)

OR.....should i just run a relay prior to the radio ,dvd system, and tv from the ignition?

thanks for all your views and suggestion, and info.

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*paw print*

Replies:

Posted By: auex
Date Posted: November 07, 2003 at 8:31 PM

Just use this diagram, the outputs can be for anything and doesn't have to be fans.

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: PuppyDawg
Date Posted: November 07, 2003 at 10:13 PM

ok i just had to confirm ifi was using this diagram correctly or not.....it just never specified. I just thought they used cooling fans as an example cause they're low current....and assumed that my lcd dvd player and other devices requires high current. Thanks again for confirming.....

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*paw print*

Posted By: auex
Date Posted: November 08, 2003 at 8:46 AM

You can have upto thirty amps worth of power off of one relay. So just add up the fuses on the equiptment, and if they equal less then thirty you are good. Also after you add up the fuse values put an appropriate fuse on the power input to the relay.

-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: PuppyDawg
Date Posted: November 08, 2003 at 10:42 AM

thanks again....i'll measure the current using my multimeter.

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*paw print*