relays

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=39465
Printed Date: May 12, 2024 at 10:57 AM

Topic: relays

Posted By: sone4200
Subject: relays
Date Posted: September 21, 2004 at 6:53 AM

O.K. , Here's the thing, I'm really stupid at this relay stuff. I am really interested in it though. If anybody could help explain things alittle better than the 'realys' section of this site, or you know another website that could teach me, please let me know.

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S-One
1992 Buick Lesabre
Clarion Dxz945MP
2000w Wolfenhag 4 channel amp
2 12" Kicker Solo L7's

Replies:

Posted By: WILL85IROC
Date Posted: September 21, 2004 at 1:58 PM

i'll c if i can find some pic's that may help u.....

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" WILL85IROC "

Posted By: aidipf
Date Posted: September 24, 2004 at 1:23 PM

hopefully this can help you. basically a relay is used to activate/deactivate a device when another device is goes to positive or negative.

30- goes to the device you are trying to operate

87a-normally closed, so whatever 30(device being operated) is hooked up to, if you have positive or negative hooked up to 87a, 30 will get that polarity(+/-) when the relay IS NOT active...this wire is usually not in use

87-normally open, meaning when the relay IS active, 30 will get the polarity(+/-) of 87...so if u need 30(device) to get + then hook up + to this wire and if 30(device) needs - then hook up - to this wire

85 & 86- usually 86 is + and 85 is negative... these are the trigger wires...example- if your doors are negative when

open, then a constant supply of 12v+ needs to be on the 86 wire and the door wire would go to 85 to activate the

relay...(then vice versa)...if your doors are positive when open, then a constant supply of 12v- needs to be on the 85

wire and the door wire would go to 86 to activate the relay.

p.s. this may need to be read slowly and twice.

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MR. INNOVATIONS

Posted By: hotwaterwizard
Date Posted: September 27, 2004 at 9:14 PM

Try this out for size.

https://electronics.howstuffworks.com/relay.htm

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

Posted By: sone4200
Date Posted: September 29, 2004 at 4:14 PM

Thanks for all the help guys.... but i guess the best way to learn is hands on.... where is the best place to get relays at? and what kind would i need to do stuff like making the stereo stay on till the door is open

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S-One
1992 Buick Lesabre
Clarion Dxz945MP
2000w Wolfenhag 4 channel amp
2 12" Kicker Solo L7's

Posted By: hotwaterwizard
Date Posted: September 29, 2004 at 5:27 PM

Here is a Relay Tutorial for you.

https://www.uoguelph.ca/~antoon/gadgets/relays/relays.html

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