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Block heater question

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Old Sep 22, 2005 | 06:37 AM
  #1  
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Block heater question

PO cut the plug off of my block heater cord and I don't really want to buy a new cord from the dealer because of cost. I'd rather just splice one on for little or no cost.

The wire is a flat 3-conductor wire. Does anyone know how to wire a new 3 prong plug onto it?
 
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Old Sep 22, 2005 | 07:59 AM
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99f350sd
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Usually the two outer are the hot wires and the center is ground.
 
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Old Sep 22, 2005 | 07:10 PM
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Thanks 99f350sd.

Does anyone know what the resistance should be. I'm thinking that the po cut it for a better reason than he/she needed a mail plug!

Also, would it matter if it were hooked up backwards so to speak? I figure it sould be easy enough to confirm the center ground, but what about the others, does polarity matter?
 
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Old Sep 22, 2005 | 08:28 PM
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Well, I stuck an Amprobe on mine and it draws in the neighborhood of 8 amps so resistance across the heater should be about 15 ohms. The ground wire goes to a little brass tab on the other end that contacts the steel shell of the heater element. Resistance to the truck frame should be less than 1 ohm for the ground lead and infinite from each of the other 2 conductors to vehicle frame.
 
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Old Sep 23, 2005 | 05:39 AM
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Thanks guys. This is just what I was looking for - I'm gonna hook it up today.
 
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