push button for GPs

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Oct 10, 2006 | 08:44 PM

DNewton

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Joined: Jul 2006

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From: Hesperia, So Cal

push button for GPs

when i hook up the manuel push button for the GPs, do i still need to go through the controller?

Oct 10, 2006 | 09:04 PM

CheaperJeeper

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From: Kent WA

Quote:

Originally Posted by DNewton

when i hook up the manuel push button for the GPs, do i still need to go through the controller?

You can go from the battery, through a fuse, and to the GP relay.

Or you can do like I did and cut and splice a switch (with a couple of long wires of course) into the purple wire that controls the relay.

By doing it the way I did, you maintain the timer and temp sensing functions of the controller. The switch just opens or closes the wire from the controller to the relay.

Oct 11, 2006 | 10:20 AM

Hamberger

Fleet Mechanic

Joined: Sep 2005

Posts: 1,509

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From: Ladner, British Columbia

If you want to get rid of the controller all together get yourself a heavy duty Motorcraft single pole starter solenoid and wire it directly to the feed harness of the glow plug controller. Use heavy gauge (6ga or 8ga) wire on the high current side from the battery thru the solenoid and to the glow plug harness.

Note running a wire from battery to a switch in the cab and back out to the glow plug harness without a solenoid is not a good idea as the current is to high and it would take one heck of a switch to handle that kind of current.

If the solenoid on your controller still works than wiring the button the way it was described about is definetely the better and cheaper way to go.

Best of luck,

Seb...

Oct 11, 2006 | 11:33 AM

CheaperJeeper

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Joined: Aug 2006

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From: Kent WA

Quote:

Originally Posted by Hamberger

Note running a wire from battery to a switch in the cab and back out to the glow plug harness without a solenoid is not a good idea as the current is to high and it would take one heck of a switch to handle that kind of current.

LOL! I didn't mean to suggest installing a switch and wire to carry current to the GPs. I meant a switch and wire to apply 12v from the battery to the control terminal on the GP relay - like like the mod posted by Dave or Zigster. 14 guage wire is enough to handle the voltage and current that activates the relay.

Quote:

Originally Posted by Hamberger

If the solenoid on your controller still works than wiring the button the way it was described about is definetely the better and cheaper way to go.

Best of luck,

Seb...

Yeah, the way I did it your controller still has to be functional. Mine was - it just had a tendancy to cycle and turn the GPs on while the engine was running WAY more often and for longer periods of time than I thought it should. I installed my pushbutton switch to "interrupt" the controller signal to the relay so that the controller can only turn on the GP relay when my finger is on the button. For $5-$10 in parts and an hour or so worth of time it is cheap insurance against the controller burning up the GPs by cycling them un-necessarily - or worse yet turning them on and leaving them on.

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