Truck remote start and TC battery charging
When I got my TC, I had the dealership install the wiring for TC hookup under the bed. I added remote start as a feature to the truck when I bought it specifically so I could charge the batteries with...
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Ford Superduty trucks have a Battery Charge Protect mode built into the ECM that can be enabled by a tech. You have to hook up a wire that’s already under the dash to one of the upfitter switches to turn it on and off. When on, the ECM monitors the battery voltage and will manipulate the the regulator and engine RPM to maintain good battery charging. The 2015 and newer trucks can actually do quite a bit without increasing the engine RPM.
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