Should Trailer Mounted Batteries Be Grounded to Trailer Frame

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Question:

Looking to run 2, 6 volts batteries in series for house batteries, and I have a question about grounding, should I run a ground cable directly for the 12v neg of the batteries to the frame of the camper? I’m asking this because there appears to have never been a ground to frame cable before on the old 12v battery? And if I’m thinking about installing a battery cut off switch, does that get installed on the pos or neg side?

asked by: Rodger

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Expert Reply:

The batteries should indeed be grounded to the trailer frame. A battery disconnect switch like # 277-000096 would install inline on the positive circuit of the battery as shown in the video I've linked for you.

expert reply by: Mike L

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Answer 1

If you wanted to ground your accessories/lights to the trailer frame then yes you'd want to ground the battery to the trailer frame as well. This would not be an issue if you had your trailer taillights grounded to the trailer frame as…

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Answer 2

Aluminum trailer frames or bodies can cause grounding issues so I suggest using a separate ground wire that runs from the rear of the trailer up to the main ground post in the junction box like #38656. You can join the ground wires for the…

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Answer 3

Since you are not getting the 12V power when your truck is running, you most likely don't have a fuse issue as you stated their isn't a specified fuse or relay in the owners manual. The issue is that your truck is computerized even at…

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Answer 4

When you adjust your output to maximum on the Curt Venturer, part #C74VV the brakes will be applied aggressively but will not lock them up as you questioned. It is a time-delayed brake controller and will apply the brakes to aid in braking as you…

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Answer 5

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Answer 6

You can put a maintenance charge on your trailer battery with the 12 volt accessory circuit of the 7-way. The 1:00 position of your 7-way carries this circuit. You would just need to run a length of 10 gauge wire like part #10-1-1 (sold by the…

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Answer 7

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 8

If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other…

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Answer 9

You have it right so far, the 4-way connector is just as you have stated. Remember that Yellow has a L in it so that is the left side brake/turn signal and green has a R in it so that is the right side brake/turn signal. The colors for wiring a…

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Answer 10

When wiring a trailer connector, it is best to wire by function, as wire colors can vary. We have an excellent wiring diagram on our website, I will provide you a link so you can look at it. If you are looking at the inside of the trailer connector…

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Answer 11

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 12

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Should Trailer Mounted Batteries Be Grounded to Trailer Frame

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