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Manual Glow Plug Switch

The Baron

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http://www.steelsoldiers.com/attachment.php?attachmentid=445122&d=1367612151

Hey guys I have a 1984 M1009. I have the Delco 60gs and I wanted to make the manual conversion so that I could heat them up a little longer like they need. I'm no electrician and don't want to make a stupid mistake that would fry my truck, but looking at this diagram it looks like all I have to do is put a wire to the glow plug relay, to 30 amp switch, and then simply ground it. Is that really all I have to do? Also where would be a good spot to ground it?
 

Warthog

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Correct.

All you need to do is "add" a wire to the small light blue wire, include a switch and then attach the wire to ground.

Push the button, gounding the relay coil and the GPs energize.

You can ground the wire anywhere. There is a 6 legged ground connector next to the parking brake.

If you are using the 60s, I would recommend that you remove the BIG resistor pack and rewire the the power supply to the GP relay from the stock 24v to 12v.
 
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doghead

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A 10 amp switch is more than enough and a 20 amp pushbutton is overkill.
 

doghead

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You can also just wait 5 extra seconds after your wait light goes out or turn the ignition swith back off and on again to cylcle them twice.

I've never needed to manually control the AC60Gs in my truck.
 

doghead

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They just don't heat until they are destroyed.

You can manually power them on and certainly hold them on longer than the controller does.

Do you need to? I don't.
 

doghead

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12F today.

It will be -15 Fri.

I let my truck sit for days, and it always starts when I need it to.
 

trooper632

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I have done several and I unhook the blue wire, Do I not need to unhook the blue wire?, All of mine work fine the way I have done it.
 

tbearatkin

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19 degrees this morning, turned key on, wait light on, pressed accelerator pedal to floor and waited until wait light went out. GP do not stop working at this point as my battery gauge is still in the yellow telling me the GP are still heating up. I start the truck and it started within 3 seconds. After about another min or two the gauge then moves into the green area and I hear the relay turn off. I have AC60 GP and all are still good after a year.
 
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doghead

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That sounds perfect to me!
 

doghead

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I have done several and I unhook the blue wire, Do I not need to unhook the blue wire?, All of mine work fine the way I have done it.
You do not need to disconnect it.

By disconnecting it, you are disabling the controller card.
 
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