help me read relay schematic

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=40984
Printed Date: May 14, 2025 at 10:31 PM

Topic: help me read relay schematic

Posted By: briandors
Subject: help me read relay schematic
Date Posted: October 16, 2004 at 7:52 AM

This is the schematic:

https://vorlon.cwru.edu/~dors/NegDisarm.jpg

My questions are, does 87A get connected anywhere? Doesn't seem like it. And then, do I have to make a connection between 85 and 86 or is that just something internal to the relay?

Thanks!

brian

Replies:

Posted By: drivesafe
Date Posted: October 16, 2004 at 8:52 AM

Hi briandors, the diagram you have shows a changeover type relay.
You could use that type or a horn relay or a headlight relay.
All would do the job at hand.
As for pin 87a, just ignore it, it is not required for anything.
The connection between pins 85 and 86 are internal and are the schematic drawing’s way of showing that they make up the connections for the coil side of the relay.
Hope this helps, cheers.

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2002 HSE Range Rover Down Under

Posted By: Velocity Motors
Date Posted: October 16, 2004 at 9:14 AM

This is a basic (-) to (-) relay configuration.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: vancouverbc
Date Posted: October 18, 2004 at 2:36 PM

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

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1991 240sx
alarm=model 2620.web central door locking system

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