how to check this relay?

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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=109764
Printed Date: May 16, 2024 at 1:54 PM

Topic: how to check this relay?

Posted By: bosanci28
Subject: how to check this relay?
Date Posted: December 15, 2008 at 10:10 AM

i have a 1982 merceds benz and my windows and windshield wipers went out,,

how can i check this?,,

has 5 legs 12v 20a/30a

one side 3 legs 1leg-85 2leg-30 3leg- 30a,87

the other side 2 legs 1leg- 20a,87a 2leg-86

some other numbers on it

sr9850

0015420219

then i have 2 circle numbers one side 01 and 82

in top the is a diagram nr#3085 868787a

thanks for any help

Replies:

Posted By: i am an idiot
Date Posted: December 15, 2008 at 3:19 PM

Using an ohm meter you should read very near 0 ohms when checking between terminals 30 and 87A. Now apply 12 volts to 86 and ground to 85. This will energize the relay. Now you should read very near 0 ohms when testing from terminal 30 to 87.

Posted By: bosanci28
Date Posted: December 15, 2008 at 4:05 PM

will try that thank you

Posted By: hotwaterwizard
Date Posted: December 18, 2008 at 10:29 PM

Swap it out with another one that you know works.

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

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