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WTB: 12vdc NC relay

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Topic: WTB: 12vdc NC relay
Posted By: Russ-neia
Subject: WTB: 12vdc NC relay
Date Posted: 10 Apr 2011 at 2:28pm
Working on a project and I need a half-dozen 12vdc normally closed relays capable of transmitting 5-10 amps.  Can someone point me in the right direction for a part at NAPA or specific vehicle and use I can get some from a salvage yard?  Prefer weather-tight case with spade or threaded-stud connectors.  Thanks!

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The innovators offer what others will imitate.



Replies:
Posted By: omahagreg
Date Posted: 10 Apr 2011 at 2:35pm
I don't have any specifics, but Radio Shack might have something as well.

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Greg Kroeker
1950 WD with wide front and Freeman trip loader


Posted By: Roddo
Date Posted: 10 Apr 2011 at 2:43pm
Pretty much any square 5 pin relay in a Ford vehicle will work for you.   They usually have a map on the side that looks like this:


85 and 86 are your control side.  If you want NC you connect power in to 30 and out from 87a. 


Posted By: jaybmiller
Date Posted: 10 Apr 2011 at 4:48pm
Roddo's right on the money with the diagram.Try a 'foglight' relay,any autoparts place will have them, about $5 in the USA( $10 here in Canada..it's a 'freetrade' thing)PS ALL made in China too....


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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water


Posted By: Steve in NJ
Date Posted: 11 Apr 2011 at 7:57am

If yer' thinking Automotive electrical, just think B&B. We have piles of SPST relays in stock if thats what yer lookin' for. 4 terminal and 5 terminal. Also have Marine style relays in stock. 30/40 amp rating and weathertite. Relay plugs, holders, modules, and our own relay panels up to 8 relays. Pretty much anything you may need. We have so much Automotive electrical stuff in stock, it'll make yer' head spin. No brag, just fact! . Drop a line if interested.....

mailto:Steve@B&B - Steve@B&B


Posted By: Nathan (SD)
Date Posted: 11 Apr 2011 at 10:45am
Normally closed means that when you put power to the relay the main circuit on the relay will go dead. That will be a odd one to find in 12V.  Mouser.com  has alot of electrical.


Posted By: Brian Jasper co. Ia
Date Posted: 11 Apr 2011 at 11:58am
Nathan, see Roddo's post. That configuration for a relay is what Ford has used from the beginning of electric fuel pumps and electronic engine controls. A late 80's Ford vehicle fuel pump/ EEC relay fits exactly what Russ is looking for.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford


Posted By: Russ-neia
Date Posted: 11 Apr 2011 at 2:39pm
Thanks for the help guys!  Roddo's schematic helped me immensely - I had seen it before on relays on equipment, but didn't stick in my mind that all of those relays had BOTH circuits.  I looked around yesterday, and there are 12 of those relays just on our pull-type New Holland chopper.  More are under the dash of my 8010 and in our skidloader.  I, like Nathan, assumed that NC would be a rare find.

What I'm doing, is putting Ag Leader electric row unit clutches on my planter.  They need power to open the clutch/shut off the row.  The GPS monitor I'm hoping to use is configured to turn power off to shut off the device (like sprayer valves), so I needed a way to reverse the on/off functions.

Thanks once again for pointing me in the right direction!


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The innovators offer what others will imitate.



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