Most TT's don't charge off the tow vehicles battery. Most of the ones I have see charge when plunged in to AC. What you are asking can be done but its tricky and requires some extra parts.
You're correct; you send up to about 10 amps back to the trailer through the connector, mostly because of the wire size. But it does charge the trailer batteries.loufish said:If you have all the relays installed then there should be 12 volts to one of the seven pins when the key is on, and no voltage while key off.
The charging rate is pretty weak, I wouldn't try to relie on it too much...
What are you running with the trailer battery?
the power supply to the charge circuit for the trailer is protected, or should be protected by a 30 amp fuse labeled "J" in the fuse and fuseable link box according to the service manual wire diagrams.jbone said:
If you are losing running lights that is a different fuse than the charge circuit or you could be losing the 10 amp fuse that is for the control circuit for the different relays. If it is fuse # 51 that is the 10 amp control fuse. What is the letter or number of the fuse that blows?jbone said:Learjet-I'll have to check into that 30 amp fuse. The fuse I'm talking about is a 10 amp tow fuse in the engine compartment.This fuse gives power to the trailer running lights, and 12 volts to the refrigerator while trailering.
I've never checked my Titans fuse block, but many times the fuse numbers are on the cover of the fuse block, check there...I am open to suggestions.I see where I would lose tail lights if I dropped that fuse,but it doesnt look like that fuse would affect 12 volts to battery or refrigerator.How can I look at the fuse in my truck and come up with a fuse number? I can only find amp ratings?
jbone said:I am open to suggestions.I see where I would lose tail lights if I dropped that fuse,but it doesnt look like that fuse would affect 12 volts to battery or refrigerator.How can I look at the fuse in my truck and come up with a fuse number? I can only find amp ratings?