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Old 08-05-2007, 06:41 PM   #1
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Disconnected Battery while driving

If I disconnect my battery while towing, will all vital driving systems still work...ie turn/brake signals and brakes?

Thanks,

Dan
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Old 08-05-2007, 06:44 PM   #2
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no your emergency brake will not work on the trailer.

john
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Old 08-05-2007, 06:46 PM   #3
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Yes, all of the lights on the trailer as well as the brakes are powered from the TV. In case of a break away condition the brakes will not work since at that point the power to the brakes would be from the on board battery.
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Old 08-05-2007, 07:11 PM   #4
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Another consideration besides the lack of breakaway protection, is that without your trailer batteries connected, your "normal" braking gets its juice from the TV battery and its power wire to the rear bumper which makes more opportunity for voltage drops to the brake magnets.
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Old 08-06-2007, 12:53 PM   #5
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Dan, is there a reason why you need to disconnect the battery? Is this a short trip that you feel is worth the risk involved? Or are you just curious?

I guess I am...

Pat
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Old 08-06-2007, 01:15 PM   #6
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Last year I needed to tow my 1964 Globetrotter sans battery, because it had tipped and spilled, and I hadn't replaced it yet. I covered the contacts so there was no shorting. The trailer brakes seemed to work OK, but there appeared to be some kind of voltage drop, as the brake lights and turn signals operated dimly at best. The problem dissappeared when a battery was reinstalled. Just FYI.
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Old 08-06-2007, 09:41 PM   #7
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OK, here's the deal

I poped a A/C and alternator fuse in my tow vehicle after towing the trailer for 5 hours. I figure it's related....reason being, whenever I plug in the trailer to the Tundra, the reverse lights come on the truck. It was never an issue and I figured I'd address it later until ths happened.

I found the bad fuse and after replacing it the AC, fan all worked but I decided to unhook the battery for the return trip. With it disconnected, the reverse lights do not come on but everything else seems to work fine.....



Dan
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Old 08-06-2007, 10:16 PM   #8
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you have a wiring ptroblem. I would fix it. You never know when your trailer may disconnect from your TV. in my case the breakaway saved my trailer.
see my website in my signature. under 2006, truck trailer accident.
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Old 08-07-2007, 01:01 PM   #9
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I kind of figured that you were asking for a reason. I'm glad you made it home ok. But note Michelle's experience - you never know when something like this might happen.

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