It does, but only if your tow Vehicale is set up for it. You will most likely see what is called an isolation device mounted on the engine wall, wired in battery cables, and connected to alternator. JM2Cents Bill
some vehicles do not have a battery isolator, but will be wired so that there is only power to the tt when the ignition is on.
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If wired properly the TV should charge the TT battery when the Tv is running.
2003 Jayco 308fbs eagle 33' tt, towed by a 2003 Ram 3500 slt, quad cab dually, cummins diesel ho, trailer towing package, with 6 speed manual. Hauls better 1/2, 3 kids, myself, and a 2003 ez go clays car.. I have added so far, neon lights, clearance lights, back up lights, black light, lift kit, mud tires, and everything necessary to make the golf cart street legal. It's now ready to spend the winter in the garage for more mods. More neon, strobe lights, alarm, a pa system, maintance, and whatever else that comes along. This golf cart does wheelies and travels thru 7 inches of mud when need be. Two honda eu2000i gens twinned to supply the electrical power. Latest addition an 04 Honda Goldwing. [url]http://www.hometown.aol.com/rvnagain/myhomepage/profile.html[url]
To see if your TV is sending 12 V to the TT battery, open the connector cover on the TT. Using a multi meter or a test light, you should detect power between the first pin past ( right of)the 12 o'clock position and ground. The ground pin is the first one past (left of)the 6 o'clock position. If you detect power there, you are sending volts to the trailer when hooked up.
Double check that ALL of your tow vehicle's fuses are in place. Many times tow vehicles will have separate fuses for trailers, and those trailer fuses may not come installed from the factory.
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Tvov wrote: Double check that ALL of your tow vehicle's fuses are in place. Many times tow vehicles will have separate fuses for trailers, and those trailer fuses may not come installed from the factory.
chevys are good for this. i found out about this practice when i dropped the TT off at the dealer and the ele jack wouldn't work-even while hooked to the TV. found and fixed this befor picking up the TT and jack worked fine. on mine w/tow pkg they put in a 'dummy' 40 amp fuse-just replace with a real one and works fine. on the flip side, if you leave the TV/TT hooked together for any length of time you run the possibility of draining both battries. even though my last 2 TV said they had a circuit built in to keep the TV batt from draining below a certain level-take it from me-i don't work. found this out a few weeks ago with present TV while on vacation. left back up cam monitor on for several days and when i went to move it-nadda. luckily i had packed the charger for some reason and it did come in handy.
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Even if the TV supplies 12V to the trailer, in most cases the wire gauge is too small to provide any decent charging current so unless you drive quite a few hours the TV won't do an adequate job of keeping the trailer's battery charged.
strollin wrote: Even if the TV supplies 12V to the trailer, in most cases the wire gauge is too small to provide any decent charging current so unless you drive quite a few hours the TV won't do an adequate job of keeping the trailer's battery charged.
Yes, don't depend on the TV "recharging" the trailer's battery. Consider it more of an "maintenance" charge.
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