Can Power Wire on Trailer Wiring Harness be Wired to Separate 12 Volt Battery Instead of Car Battery

Question

Question:

If you have a spare battery like the one I use for my trolling motor, could you hook the module up to it instead of routing the wire up to the main vehicle battery ?

asked by: Bob B

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Expert Reply:

Technically you could wire a powered trailer wiring harness such as # C56033 to a separate 12 volt battery. However, without an alternator to maintain the charge of the battery, the trailer lights would drain the battery and you would not know it. It will also void the harness warranty.

Because of this I strongly advise against this method of installation. The harness should always be connected to the vehicle battery and not any other power source.

Routing the power wire is not all that difficult, it just takes time. I have included a link to a help article I wrote with tips on routing the power wire for you to check out.

expert reply by: Michael H

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Answer 1

In order to add lights to your Kuat Sherpa bike rack, I recommend the #C53201 Curt Auxiliary LED Indicator Lights. These lights have a 3M adhesive backing for secure, convenient mounting on a variety of surfaces including your bike rack. Just stick…

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Answer 2

Normally this is corrosion or dirt on the pins of the trailer connectors that only requires some sanding to get rid of and fix. If you already checked for that it could also be a bent pin on the connectors as well. The "no connection" light…

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Answer 3

To splice in a trailer end connector such as the 4-Pole Trailer End Connector #18004 or Hopkins Endurance Easy-Pull Harness w/ 4-Pole Flat Connector - Trailer End #HM38134 you will need to match the connector to your wires by function. On these…

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Answer 4

The first thing you are going to want to do is use a circuit tester like #PTW2993 if needed and test the connector on your truck to make sure all of the functions are working. If they are not use the owner's manual and/or the legend on the power…

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Answer 5

The trailer has a wishbone harness on it. The green wire is right turn signal/brake lights, yellow is left turn signal/brake lights. White is the ground. The green/brown is the running light wire for the right side and the yellow/brown is the running…

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Answer 6

The problem you are experiencing sounds like a ground issue and/or short circuit. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or…

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Answer 7

The etrailer.com hitch part #E98846 is the hitch I recommend for your 2018 Nissan Rogue that has the handsfree lift gate sensors and back up camera. While Nissan recommends a special harness to allow the sensors to still work after a hitch install…

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Answer 8

The etrailer.com Trailer Hitch Receiver part #E98846 is made by Curt right here in the USA. The only difference between this and the Curt Trailer Hitch Receiver part #C13204 is that the Curt hitch has a glossy powered coated finish whereas the…

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Answer 9

The trailer hitch I recommend for your 2019 Nissan Rogue SV is the etrailer hitch part #E98846 because it has the matte finish you want, it has plenty of towing capacity at 3,500 lbs, and it has a concealed crosstube which makes it a bit less…

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Answer 10

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 11

When a hitch like #75902 is installed on a vehicle that has multiple rear bumper lift gate sensors usually it is only the center one that might be affected by the presence of the hitch tube. In practical terms all this means is that the liftgate…

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Answer 12

The etrailer.com trailer hitch receiver, part #E98846, does not require a support strap for its warranty. The hitch itself is rated and can handle up to 525 pounds of tongue weight but you also need to make sure your vehicle can. I looked up an…

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Can Power Wire on Trailer Wiring Harness be Wired to Separate 12 Volt Battery Instead of Car Battery

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