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DieselObsession76 10-24-2013 07:59 AM

Block heater and toaster
 
Can anybody tell me which wires need to go where to put a new plug on my block heater? And if somebody can give me a quick rundown on how to put my grid heater on a switch I would greatly appreciate it

cougar 10-24-2013 02:44 PM

The grid heater contactor's are wired in parallel. One side goes to 12 volts, the other side is grounded through the PCM IIRC.

cviola2005 10-24-2013 03:41 PM

Standard block heaters that go in place of a freeze plug have three round terminals. The middle is for neutral, and the outside two get positive and negative in any order.

Hopefully this helps.

u2slow 10-25-2013 02:56 AM

I disconnected my grid heater entirely. However, I would run it on a manual momentary pushbutton with a relay - that way you aren't running 30+ amps to a switch on your dash.


Originally Posted by cviola2005 (Post 1031874)
Standard block heaters that go in place of a freeze plug have three round terminals. The middle is for neutral, and the outside two get positive and negative in any order.

Since the block heater is 120volt AC, there is a ground, hot, and neutral. The hot and neutral doesn't matter which is which since it is a simple heating element.

cviola2005 10-25-2013 04:53 PM


Originally Posted by u2slow (Post 1031971)
I disconnected my grid heater entirely. However, I would run it on a manual momentary pushbutton with a relay - that way you aren't running 30+ amps to a switch on your dash.



Since the block heater is 120volt AC, there is a ground, hot, and neutral. The hot and neutral doesn't matter which is which since it is a simple heating element.

Exactly correct. Sorry, I gave the wrong terminology. Positive for hot and negative for neutral.


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