Engine Block Heater Power
Hotshot
Joined: Jul 2013
Posts: 14,244
Likes: 2,179
no..the block heater connection directly powers a resistive element in isolation of the entire truck electrical system.
Cargo Master
Joined: Feb 2005
Posts: 2,898
Likes: 184
Why would you want to do both from one plug? If you were going to drive the truck soon you would have the heater plugged in. If you were not driving it soon and wanted to keep the batteries charged you wouldn't want the heater on all of the time?
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Senior User
Joined: Mar 2019
Posts: 486
Likes: 8
From: Salt Lake City
I was told it charged the batteries as well, but was skeptical. That's why I asked the question. You guys know more about these trucks than anyone.
I appreciate the feedback.
I appreciate the feedback.
Cargo Master
Joined: Feb 2005
Posts: 2,898
Likes: 184
Gotcha...... Have a good day
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Senior User
Joined: Mar 2019
Posts: 486
Likes: 8
From: Salt Lake City
I don't drive the truck much during the winter months and was wondering. I used to put two trickle chargers on my last truck. For those who don't drive them much on the winter .. it would be nice if the plug handled both.
Fleet Mechanic
Joined: Nov 2005
Posts: 1,508
Likes: 87
From: North Carolina, Raleigh
no reason you could not install a 120v trickle charger that was on the heater plug circuit so when you plug in heater the trickle charge is in service as well..I used the harbor freight deal and it works great.. and does not over charge or boil the batteries.. just keeps a 13.3 volts with little amp flow. perfect for low use in cold weather.. you could also hook the system up to a size appropriate size timer to turn on the heater each day for a couple hrs along with the charger.
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Fleet Mechanic
Joined: May 2018
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For my, my 6.7 is my daily driver. When it's cold, I have an exterior plug on a timer for the block heater. I plug it in the night before when I get home from work. The timer 'goes live' at 2 AM and I start it and leave for work around 5 AM. If the truck is going to sit for days on end, I don't plug it in, no need to waste the energy.
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Mountain Pass
Joined: Aug 2019
Posts: 135
Likes: 20
From: Lampe, MO
I have an on board battery tender for keeping the batteries charged when it sits most of the winter. I have a single outlet in my airdam that feeds both my engine heater and my charger but I have a solid state relay hooked up to an outfitter switch that only provides power to the engine heater when the switch is flipped. I also have a light near the start button to tell me that the truck is plugged in and if I don't see it and start the truck a buzzer will sound until the truck is unplugged.
Elder User
Joined: Jul 2017
Posts: 622
Likes: 6
From: Gladys, VA
No. I attached lead to passenger side battery and it keeps both charged and desulfated.
Fleet Mechanic
Joined: May 2018
Posts: 1,765
Likes: 502
I have an on board battery tender for keeping the batteries charged when it sits most of the winter. I have a single outlet in my airdam that feeds both my engine heater and my charger but I have a solid state relay hooked up to an outfitter switch that only provides power to the engine heater when the switch is flipped. I also have a light near the start button to tell me that the truck is plugged in and if I don't see it and start the truck a buzzer will sound until the truck is unplugged.
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