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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Kayteg1 wrote:
It is not the fuse rating that limits TC charging via trailer plug.
It is size and length of the wire.
For reasons that I will never understand, the charging wire runs about 30 feet between alternator and TC battery. Since it is usually max #10 gauge, you have about 1.5V drop at 20 amp, meaning the fridge will deplete TC battery.
You are partially correct, but you are over simplifying it !
If you ran #00 gauge from the alternator to the TC house battery/inverter you would still only get about 13.2V ! That would probaby be enough to run your inverter, but it is NOT enough to recharge depleted house batteries. Why ? Because the PCM controls the charging voltage of the battery. Even on a big diesel, the PCM ASSUMES that it only need to replace the energy in the truck batteries that was used to start the truck.
A car/truck alternator is the WRONG TOOL to recharge house batteries, especially deep discharge batteries.. PERIOD !!!
