Truck-to-Trailer Battery Cables are exactly what they sound like. It’s a heavy gauge electrical cable that runs from the battery of the tow vehicle all the way to the back bumper, through a disconnect plug, to the batteries on your dump trailer. This is most useful for roll-off trailers that get used all day every day as a regular dump trailer that gets used a few times per week can usually be maintained by either a solar, onboard plug-in, or regular automotive battery charger.

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