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Micro relay orientation

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Old Jan 25, 2022 | 01:18 AM
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Default Micro relay orientation
Doe it matter which way the micro relays in the fuse box under the hood and in the passenger area go in? Seems like they plug in either way...
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Old Jan 25, 2022 | 02:31 AM
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They will work either way !!
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Old Jan 25, 2022 | 11:53 PM
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Relays or fuses?
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Old Jan 26, 2022 | 12:17 AM
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Originally Posted by MrMcE
Relays or fuses?

Both !!…take your horn relay and spin it around..test it and it will work !!
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Old Jan 26, 2022 | 12:30 AM
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Originally Posted by C5 Diag
Both !!…take your horn relay and spin it around..test it and it will work !!
Existential crisis averted, makes sense with the diagram. 85/86 are the signal pins (polarity insensitive coil), they are diagonally opposite so turning it around just switches their position with each other.


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Old Jan 26, 2022 | 12:34 AM
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Originally Posted by MrMcE
Existential crisis averted, makes sense with the diagram. 85/86 are the signal pins (polarity insensitive coil), they are diagonally opposite so turning it around just switches their position with each other.

Exactly !!…we call 85 and 86 the “control” side and 87 and 30 the “load side of the relay.
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Old Jan 26, 2022 | 12:55 AM
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Thanks for clearing that up It was driving me nuts cos I would look up C5 fuse boxes on google and some would appear upside down lol
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Old Apr 6, 2024 | 05:50 AM
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What is the chance of such relay going bad? What is the spec or reference?
thanks!
TCFS
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Old Apr 6, 2024 | 07:06 AM
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Originally Posted by TCFS
What is the chance of such relay going bad? What is the spec or reference?
thanks!
TCFS
I have never had any go bad on on buth C5s I've owned so far. In any car, climate and weather (humidity) is what can do it besides electrical overload.
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Old Apr 6, 2024 | 07:27 AM
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Originally Posted by vettefx76
........In any car, climate and weather (humidity) is what can do it besides electrical overload.
Not so much. That particular relay is designed to operate up to 95%RH, with a temperature range of -40 to 250 degrees F. The relays of this type I have seen fail early in their life were do to poor manufacturing practices. Years down the road is just electrical/mechanical fatigue.
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Old Apr 6, 2024 | 10:56 AM
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Is it something which can be opened, exercised, cleaned…or should just be just replaced?
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Old Apr 6, 2024 | 11:05 AM
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Originally Posted by TCFS
Is it something which can be opened, exercised, cleaned…or should just be just replaced?
You could possibly open and clean it but it's wildly impractical. If you have access to a replacement that's the way to go.
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Old Apr 6, 2024 | 05:41 PM
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Originally Posted by TCFS
Is it something which can be opened, exercised, cleaned…or should just be just replaced?
Such a cheap part......just replace it.
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Old Apr 7, 2024 | 03:14 AM
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Agree it is cheap, in US…they are not readily available in Europe unfortunately… I bought a handful from Rockauto and have them sent to a friend in US who will visit later.
thanks!
TCFS
Last edited by TCFS; Apr 7, 2024 at 03:21 AM.
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