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Old 08-04-2013, 02:53 PM   #1
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Hot Wire for toad

ON running a hot wire from the RV to the Toad, do you just need to run a wire from the RV to the Toad battery with fuses on each end? If so what guage wire should be used?

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Old 08-04-2013, 03:16 PM   #2
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Fuses at both ends, and wiring suitable to the fuse size, 20 amp fuse 12gauge wire , this will be ok for a toad battery maintenance charge, however if you hook up and the toad battery is dead, you will blow the fuses.
If your charging to maintain because of a toad braking system draw, you may need larger fuses and wiring depending on that draw, you would want to double it.
Brake system draw 12 amps , charge system fuses 25 amps & 10 gauge wire , for example.

99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
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Old 08-04-2013, 10:33 PM   #3
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We went with 12ga and 20A fuses. Not one problem in over 120,000 tow miles on two toads. On our Tiffin the charge wire is dead with the Bus key off, so no isolators, separators, or other fancy goodies are not necessary. If it didn't die when the key were turned off, I'd just pull the plug when overnighting to keep from drawing the MH batteries down. KISS principal.
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2011 Chevy Silverado 1500 Toad
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Old 08-04-2013, 10:56 PM   #4
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I used 10 Ga wire and 30 amp auto reset fuses at each end. The wiring is less than 15 feet. Probably didn't need to go with that large a wire and fuses.
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Old 08-05-2013, 04:26 PM   #5
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I have a seven pin plug on the mh and one of those is a charge line which goes dead with the ignition off. Run that to a 6 pin on the toad. Use an lsl toad charger. So from the six pin to the circuit breaker then to the little charger then to the battery. It also had circuitry to prevent voltage from going the wrong way.
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Old 08-05-2013, 04:34 PM   #6
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X2 on the LSL Toad Charge.......many a mile ( with two different coaches) and never a problem.


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Freightliner Chassis/Cummins ISC 380HP
2010 Honda CRV Toad
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