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Russ-neia 
Silver Level
Joined: 11 Sep 2009
Location: NE Iowa
Points: 489
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 Topic: WTB: 12vdc NC relay
Posted: 10 Apr 2011 at 2:28pm |
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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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omahagreg
Orange Level Access
Joined: 11 Sep 2009
Location: Omaha, Nebraska
Points: 2800
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Posted: 10 Apr 2011 at 2:35pm |
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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
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Roddo
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Joined: 16 Jul 2010
Location: Brant, Ontario
Points: 466
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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.
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 22270
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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
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11748
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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.....
Steve@B&B
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Nathan (SD)
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Joined: 11 Sep 2009
Location: Day County SD
Points: 1260
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Posted: 11 Apr 2011 at 10:45am |
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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.
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Brian Jasper co. Ia
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Joined: 11 Sep 2009
Location: Prairie City Ia
Points: 10508
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Posted: 11 Apr 2011 at 11:58am |
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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
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Russ-neia
Silver Level
Joined: 11 Sep 2009
Location: NE Iowa
Points: 489
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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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