Originally Posted by BuddyRay
Lastly - the "charge line" is a very tiny wire (like 8ga) and only supports .5a. In other words it won't really "charge" a dead or low battery and it certainly won't run something like a jack. It's designed (by an idiot who never owned an RV) to simply provide a trickle charge to "maintain" the RV batteries.
This is about the only thing about my new F150 I don't like.
2x to the design issue regarding the charging wire used in the F150... so I just went out to the truck and checked what gauge wire is used between the breaker and the trailer connector. I remember looking at it a few years ago, and thought it was rather thin.. based on what I see this morning, it is more like a 12 or 14AWG wire... that will REALLY limit the charging capabilities of the F150/trailer.. I also noticed that the F150 seemed to ignore the TT batteries voltage level.
Guess, I will replace it with a 6AWG from the battery to the trailer connector and a 30amp breaker.
The one thing I did notice was that the F150 did not recognize the low voltage on the TT battery and step up the charging voltage (after truck engine was not on the initial higher voltage charge after starting). I tested it after running down the TT batteries to 12.1 volts, I started the F150 and the voltage was at 14.8 volts. When the F150 battery came down to 13 volts, I connected the trailer (with SOLAR disconnected) and the voltage at the F150 battery did not change (at all, and yes initially there was 14.8 on the trailer connector), making me believe that there may be a blocking diode in the trailer charging circuit to isolate the F150 from the trailer. With a diode in place, the F150 does not see the battery, but still supplies its current/voltage, based on the needs of the F150 battery. Yes, the trailer is programmed into the truck as EAGLE, and it does come up on the display, which confuses my blocking diode theory, although there may be other sensors working here. You would think that the 12.1 trailer voltage would bring down the F150 battery to an point between the 2 batteries, and the truck would raise the charging voltage. I will continue trying to figure this out, but it is not at the top of my priority list...
2013 Jayco Eagle 284BHS
250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller
1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
2 - AirSight Wireless IP Cameras (used as rear view cameras)
EnGenius WI-FI extender, D-Link wireless (n) modem
MagicJack Internet Phone
2012 Ford F150XLT, EcoBoost w/3.73
157" Wheel base, HD Towing Package
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