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Starter engaged light, was Starter and contactor

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BobsV35B(at)aol.com
Guest

Posted: Sat Feb 06, 2010 11:32 am Post subject: Starter engaged light, was Starter and contactor

Good Afternoon Jon,

  

 Not sure if that is an open question to all or meant for 'Lectric Bob.  Nevertheless, what advantage is it to you to know that the button has been  pressed? Isn't what you really care about whether or not there is power within  the fat wire going to the starter? 

  

 Happy Skies,

  

 Old Bob Siegfried

 LL22 Stearman N3977A

  

  In a message dated 2/6/2010 12:35:16 P.M. Central Standard Time,  jonlaury(at)impulse.net writes:

  	  Quote: 	
		     I am using a DPST momentary switch, with a lamp    in it that is switched independently, wired to the coil of a starter contactor    for my START button. I plan to wire the internal lamp to one side of the    switch so that it goes on when the START button is depressed and also have a    parallel wire going to the fat wire between the starter solenoid and the    starter. So the lamp will light when I depress the START button and will go    out when it is released...unless the starter solenoid is stuck closed and the    fat wire between the starter solenoid and the starter is    energized.

    

   See any glitches?

 	  Quote: 	
		  



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jonlaury

Joined: 06 Nov 2006
Posts: 336

Posted: Mon Feb 08, 2010 12:09 pm Post subject: Starter engaged light, was Starter and contactor

Hello Old Bob,

  

 Thanks for giving this some thought.

  

 The purpose of the lamp going on when I depress the  starter is as a test of the lamp.

  

 John

  

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BobsV35B(at)aol.com
Guest

Posted: Mon Feb 08, 2010 1:51 pm Post subject: Starter engaged light, was Starter and contactor

Good Afternoon John, 

  

 That sounds good, but if the starter works, won't that give you a check of  the lamp? 

  

 The way Beech handled the test function was to present a current  from a dedicated lamp test switch to the starter warning lamp. To keep the lamp  current from trying to drive the starter, they added a diode that only allows  current from the starter to the light and blocks the flow from the lamp to the  starter.

  

 That way we can check the light without closing the starter relay

  

 I did the same thing when I wired my warning lights. Since my factory  warning lights were wired a bit differently, I used a double pole, single throw,  switch to isolate the starter warning light circuit from the other warning  circuits. Works great!

  

 Happy Skies,

  

 Old Bob

  

  In a message dated 2/8/2010 2:11:39 P.M. Central Standard Time,  jonlaury(at)impulse.net writes:

  	  Quote: 	
		     Hello Old Bob,

    

   Thanks for giving this some thought.

    

   The purpose of the lamp going on when I depress    the starter is as a test of the lamp.

    

   John

    

 	  Quote: 	
		  

	
	


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jonlaury

Joined: 06 Nov 2006
Posts: 336

Posted: Wed Feb 10, 2010 11:00 am Post subject: Starter engaged light, was Starter and contactor

Hello OB,

  

 The switch has an independently switched lamp. So  the lamp does not necessarily go on when the starter is activated. As stated, I  plan to connect one pole of my dpst switch, through the switch, to the lamp for  the test circuit. The hung starter circuit is in parallel with the test circuit,  but derives power from the fat wire between starter solenoid and  starter.

  

 John

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BobsV35B(at)aol.com
Guest

Posted: Wed Feb 10, 2010 6:06 pm Post subject: Starter engaged light, was Starter and contactor

Sounds Fair To Me!!

  

 Happy Skies,

  

 Old Bob

  

  In a message dated 2/10/2010 1:02:32 P.M. Central Standard Time,  jonlaury(at)impulse.net writes:

  	  Quote: 	
		     Hello OB,

    

   The switch has an independently switched lamp. So    the lamp does not necessarily go on when the starter is activated. As stated,    I plan to connect one pole of my dpst switch, through the switch, to the lamp    for the test circuit. The hung starter circuit is in parallel with the test    circuit, but derives power from the fat wire between starter solenoid and    starter.

    

   John

 	  Quote: 	
		  



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