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Block Heater Cord Wiring

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Old 01-11-2007, 04:19 PM
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Block Heater Cord Wiring

The cord on my block heater is frayed at the plug end and no longer works. I bought a new three prong plug to wire in but dont know which wire goes where. I thought I'd ask before going ahead and shorting out the heater in my truck.
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Old 01-11-2007, 04:25 PM
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I believe it's center ground and the two outside wires don't matter. It's A/C. Test for ground if you have a multimeter and that should get you your answer.
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Old 01-11-2007, 04:52 PM
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Doesn't the block heater only have two contacts? If that is the case, no ground to worry about and A/C isn't polerized. Just put either of the two hot wires (white/black) on the plug.
If there is a ground go as the above post.
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Old 01-11-2007, 05:09 PM
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There is three wires on mine so i guess the middle one is ground. Also, does anyone have that mod for the heater plug that you put into the side of the driverside bumper??
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Old 01-11-2007, 05:47 PM
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Wink Try this . . .

Go to beachbumcook gallery and he has the Marinco plug mod where it is mounted to the front bumper.

The plug is three prong, note pic, so rewire the same as you unwirered. Or do the plug in the bumper deal . . .

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Old 01-11-2007, 10:23 PM
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Ok, got the new plug in. See what happens in the morning.
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Old 01-11-2007, 10:55 PM
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Click on my screen name above and go to my gallery.

Scroll down to the gallery with the block heater plug mod.

Good luck... great mod...
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Old 01-12-2007, 12:29 AM
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Quote:
Originally Posted by Beachbumcook
Click on my screen name above and go to my gallery.

Scroll down to the gallery with the block heater plug mod.

Good luck... great mod...
Lol, good thing I didnt do that last year. I was pulling a 15,000 pound tank and found out the plastic piece under the bumper ripped off going through some mud and dirt. Found out it was dragging for about 100 km. Ripped it off and left it in the ditch.

Last edited by Reidicus; 01-12-2007 at 12:32 AM.
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