Starter relay? |
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captianpattson
Member Joined: 07 Apr. 2010 Location: ST GEORGE, UT Status: Offline Points: 770 |
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Posted: 24 Apr. 2011 at 5:11am |
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Is there a difference between a starter relay and starter solenoid? I need to get one since i'm using a key switch. Is there a specific one I should be looking for? Edited by captianpattson - 24 Apr. 2011 at 5:23am |
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p3ferris
Member Joined: 22 July 2005 Location: Norfolk Nebraska Status: Offline Points: 3812 |
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Not really, the relay is usually plugged in and the solenoid mounts on the fender. That one should be a solenoid. 2 large terminals and 1 or 2 small terminals. They both do the same thing.
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Ed
cj2a lefty |
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sean
Moderator Group Sponsor Member Joined: 20 July 2005 Location: North Idaho Status: Offline Points: 7388 |
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YES! Technically, they are quite different. Unfortunately, too many people and vendors today refer to the solenoid as a "relay", when in fact it is not. They have obfuscated the terminology. In modern cars, the starter "relay" (the plug-in type) is used to energize the starter "solenoid", while simultaneously cutting off any other electrical devices you might have turned on (fans, lights, radio, etc.), so that all the battery power is made available to the starter.
You want a "solenoid", regardless of what the vendor might call it. 6 or 12 volt as appropriate. Internally grounded. See: There have been many past discussions, try searching for "solenoid". |
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sireland67
Member Joined: 27 Feb. 2009 Location: Nutter Fort WV Status: Offline Points: 989 |
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I would buy an solenoid from a mid 70"s Ford car or truck, it has its own bracket so you can mount it anywhere.
If you are running 12 volts you can also use a pre-1972 Chrysler ballast resistor reduce the amount of voltage to the coil so you don't fry the points.
I can help you wire it up if you need more info.
Edited by sireland67 - 24 Apr. 2011 at 2:56pm |
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1948 CJ-2A
2003 TJ |
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captianpattson
Member Joined: 07 Apr. 2010 Location: ST GEORGE, UT Status: Offline Points: 770 |
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I can get one from the parts store this week from a 75 mustang, it had a 2.9 liter so i figured it was the most similar engine size. They're only $12, when I get there I'll let you know, I'll need all the help I can get:) |
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rocnroll
Member Sponsor Member Joined: 20 July 2005 Location: Tuscumbia, AL Status: Offline Points: 13585 |
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Don't know what a '75 Mustang's looks like but engine size has nothing to do with anything pertaining to this.
The one Shawn picture is the type most commonly used.....if your parts store has one for a '75
Mustang it very well could be like that one but I don't know....
Most decent parts stores will know it as a '12 volt Ford style starter relay'......and hand you one like Shawn pictured.
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'47 CJ2A PU
'48 CJ2A Lefty "Common sense is not that common" |
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captianpattson
Member Joined: 07 Apr. 2010 Location: ST GEORGE, UT Status: Offline Points: 770 |
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The picture looked the same as the one Shawn pictured... They did have 3 for the 75 mustang, one for $12, one for $15 and one for $20. Being the cheapskate that I am, and knowing the jeep isn't going to be a daily driver, assumed the $12 one would be fine. |
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F Bill
Member Sponsor Member x 2 Joined: 05 Dec. 2005 Location: central Texas Status: Offline Points: 7752 |
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75 Mustang would be the Mustang II, and would use the one pictured..
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If you haven't checked out the tech FAQ section, go to:
http://www.thecj2apage.com/forums/tech-faq_forum57.html for a lot of great stuff you need to know!! |
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OverlandMan
Member Joined: 27 Apr. 2009 Location: Rowlett, TX Status: Offline Points: 544 |
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Yep - Sean's right... and I'm guilty of using them synonymously on occasion. I would recommend getting a solenoid with a momentary button that closes the circuit to the starter and allows for easier diagnostics under the hood. I have this type on my setup. It's ground-side switched. |
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sean
Moderator Group Sponsor Member Joined: 20 July 2005 Location: North Idaho Status: Offline Points: 7388 |
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Oops! Didn't mean to imply you in my comment. Should have worded that differently. I just see the misuse all over the web these days. While they both function the same way (use a smaller current to switch a larger current), a true relay doesn't substitute for a solenoid.
Is that type still made by anyone these days? Sean
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OverlandMan
Member Joined: 27 Apr. 2009 Location: Rowlett, TX Status: Offline Points: 544 |
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No you're good. I know what you mean!
Good question. I did a quick internet search and came up relatively empty-handed. I did see this one on a British mini parts site: http://www.minispares.com/Product.aspx?ty=pb&pid=42337 I would think that would work. Of course, those who want everything original to their 2A are probably cringing. |
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TERRY
Member Sponsor Member Joined: 22 May 2007 Location: BOULDER COLORADO Status: Offline Points: 3400 |
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You could always rig up a switch and alligator clips to use on the rare occasion.
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BOULDER 48 2A
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OverlandMan
Member Joined: 27 Apr. 2009 Location: Rowlett, TX Status: Offline Points: 544 |
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Absolutely right... or a power probe, or whatever else you've got to close the circuit. Guess I'm just spoiled with mine.
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