Help with this relay!
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Outstanding HDF Member
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From: Brunswick, MD
Help with this relay!
Here's where I'm stuck..... Which terminals are which?
There's 5, one on each side and one in the middle, So is 30 the one on the right, 85 the one on top, 87a the one on the left, 87 the one in the middle and 86 the one on the bottom? Anybody know?
The middle don't get used.
There's 5, one on each side and one in the middle, So is 30 the one on the right, 85 the one on top, 87a the one on the left, 87 the one in the middle and 86 the one on the bottom? Anybody know?
The middle don't get used.
Last edited by Naz_Man; Feb 20, 2009 at 07:30 PM.
Thread Starter
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Outstanding HDF Member
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From: Brunswick, MD
thank you!
Tourer
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From: The beautiful NW GA mountains.
Comparing this diagram to the color photo on the website for howards horns it appears that the 30 post on this diagram would also be the 30 post on your relay. Which would be to your + battery post. Armed with that info you should be able to map out the rest. I did my best to help with this but you're on your own with the spinners. LOL
Thread Starter
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Outstanding HDF Member
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From: Brunswick, MD
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From: The beautiful NW GA mountains.
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Tourer
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From: The beautiful NW GA mountains.
I agree however that will also make the other two backwards...I think getting confused myself now.
Road Warrior
Joined: Dec 2006
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From: MA
you got a DVM?
If the terminals are not marked and you don't have a picture - then the only way to figure it out is with a volt-ohm-ammeter. As mentioned - this is a form c relay where the common (30) connects to 87a (normally closed) connection when static, but then connects to 87 (normally open) connection when energized. As long as there is not a diode in parallel with the coil - the polarity is not important there. If there is a diode then you have to get that connection correct as well. put your meter on ohms and find the coil (prolly 300-1000ohms) thats the first step.
If the terminals are not marked and you don't have a picture - then the only way to figure it out is with a volt-ohm-ammeter. As mentioned - this is a form c relay where the common (30) connects to 87a (normally closed) connection when static, but then connects to 87 (normally open) connection when energized. As long as there is not a diode in parallel with the coil - the polarity is not important there. If there is a diode then you have to get that connection correct as well. put your meter on ohms and find the coil (prolly 300-1000ohms) thats the first step.