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Glow plug relay not working!

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Old Jan 18, 2013 | 09:13 PM
  #16  
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Beautiful! thanks buddy, we'll test it out tomorow. Is this all with the switch on or off?
 
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Old Jan 18, 2013 | 09:22 PM
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Key ON. That's the whole point. How much is the voltage dropping between the two big terminals while it's energized? That's the thing we're trying to find out.
 
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Old Jan 18, 2013 | 09:38 PM
  #18  
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Okay. i'll update tomorrow.
 
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Old Jan 19, 2013 | 09:34 PM
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checked it out, with the switch on and my voltmeter on VAC i think it was, only setting i could get to read anything that sounded right, i had .08 and .07. sound right?
Wasn't really positive on which setting to have it..
 
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Old Jan 19, 2013 | 09:38 PM
  #20  
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WARNING IF YOU JUMPER THE RELAY,, DO SO FOR ONLY 10-15 SECONDS OR YOU OVER HEAT, AND POP YOUR GP's!!!!!!!!!!!!!!!!!!unless you un hook them first.
 
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Old Jan 19, 2013 | 11:53 PM
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VAC means Volts Alternating Current, like house current. You should have a VDC setting, as in Volts Direct Current. Use that setting.
 
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Old Jan 20, 2013 | 08:09 AM
  #22  
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One thing i forgot to mention is Before i would jujmper it from the hot wire on the STARTER relay mounted on the fender wall, i tried that this time and it wouldn't do it, i got it to do it once but then it wouldn't anymore, it would click on from the batery hot post but not from the starter relay anymore, that couldn't cause the gp relay to not click on could it? i mean it gets power direct from the battery?
 
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Old Jan 20, 2013 | 11:57 AM
  #23  
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Which post on the starter relay?
 
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Old Jan 20, 2013 | 02:47 PM
  #24  
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The one with the big red wire running to it. the big post on the bottom of the relay. it used to work every time to jump power to the gp relay but now it dont work except for once.
 
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Old Jan 20, 2013 | 07:57 PM
  #25  
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Just wondering if a bad starter relay could somehow make the gp relay not work
 
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Old Jan 20, 2013 | 09:34 PM
  #26  
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the GP relay should have constant batt voltage to one of the large posts... the other large post is the wires going to the GPs.. the small posts are from the controler..one is ground, and one is only hot when the controler wants the glows on...the relay can be replaced if bad, part#GPR109...the other wires have to do with power to controler,and wait to start light.ect
 
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Old Jan 21, 2013 | 01:43 AM
  #27  
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Originally Posted by Eallend7
Just wondering if a bad starter relay could somehow make the gp relay not work
No, the starter relay connection is just a "junction" point. The current to the GP relay isn't going through the starter relay.
 
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Old Jan 21, 2013 | 05:05 AM
  #28  
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well. then i got no clue. i'll do another volt test the RIGHT way on the gp relay but it still clicks over when getting power from the battery hot post, i always thought that meant the relay was good. but maybe not.
 
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Old Jan 21, 2013 | 08:30 PM
  #29  
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Well i have one more question guys, if this gp relay is shot, to wire up a push button i would need a new relay, yes?
If i get a new relay, and something further up the line was shot like the controller, and i wanted to wire up a push button, i would tap into a fuse and run a wire from there to the push button, then from the other post, run a wire out to the purple wire's post on the relay. yes? If i did that, which fuse would yall recommend i tap into, and i have a wire that was previously used for this application on another truck that wasn't mine, it is shorter and would work for the fuse to button purpose, BUT it has an inline fuse, would that be okay even though i'm drawing power from a fuse already? not an electrician guys if you couldn't tell x:
 
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Old Jan 23, 2013 | 11:07 PM
  #30  
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IF the relay is bad it may close (click) when it is saposed too, but not energize the glows..if so replace it... to test it use test light touch the post that go's to glows and have some one turn the key...the test light will come on just like the wait to start light...if relay is good...if no click...and no wait to start light..or it go's out right away with out energizing the glows, the controler maybe bad...check all conections b for u spend mony...to in stall push buttion...find Accessery post in fuse box or suitatble power hot with key on...install 5amp fuse inline... run to push button.. then to the small post, that is not grounded on gp relay this will operate relay, when pushed..DANGER WILL MELT TIPS OFF GLOWS IF HELD ON TO LONG!!!!!!!
 
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