Test round relays?, 3 out of four bad? |
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Test round relays?, 3 out of four bad? |
StarBear |
Oct 4 2021, 04:03 PM
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#1
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Senior Member Group: Members Posts: 1,915 Joined: 2-September 09 From: NJ Member No.: 10,753 Region Association: North East States |
Just curious- is there a way to test those little round relays? Hard to believe so many were bad, including a brand new one.
Info: 1974 1.8L; Left headlight stopped lifting so naturally first replaced the relay. No go. (IMG:style_emoticons/default/confused24.gif) Cleaned ground and checked wiring and put a drop of oil in each joint. No go. Put in another relay. No go again. (IMG:style_emoticons/default/hissyfit.gif) So before digging into the motor, checked out Ian’s video, Haynes, Tech Tips 700, and Pelican Parts Tech to figure out how to address the motor. In a usual last ditch effort to an easy approach, used the tried and true swap with known good relay on the right motor and the left worked! Put ANOTHER new relay in the right and BOTH worked! (IMG:style_emoticons/default/aktion035.gif) Want to investigate by testing the first three, just out of curiosity. |
StarBear |
Oct 4 2021, 07:09 PM
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#2
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Senior Member Group: Members Posts: 1,915 Joined: 2-September 09 From: NJ Member No.: 10,753 Region Association: North East States |
@Spoke Tested; found two more bad ones and four good ones, though resistance results matched at zero ohms by reversing designations 87 and 87a in instructions (87 with power and 87a without). Correct?
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Spoke |
Oct 5 2021, 05:29 AM
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#3
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Jerry Group: Members Posts: 6,992 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
@Spoke Tested; found two more bad ones and four good ones, though resistance results matched at zero ohms by reversing designations 87 and 87a in instructions (87 with power and 87a without). Correct? Correct 30-87a w/o power; 30-87 w/power. Conversely, both should be open: 30-87a w/power; 30-87 w/o power. |
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