Battery Disconnect for Dual Battery Setup on Diesel Truck

Question

Question:

Need to have battery disconnect for flat towing Truck has Diesel engine ,two batteries

asked by: Hugh H

0

Expert Reply:

The Dual Battery Isolator Switch # 3376391050 that you referenced would work well for you as it can turn off two batteries easily by rotating the switch and is rated for up to 1,000 amps surge.

expert reply by: Jameson C

0

Answer 1

When you say you have 2 batteries, I am assuming you may have a diesel model. Even if this is the case, you still only need one battery disconnect kit. This is because batteries are wired together on a single system. If you use the disconnect on one…

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Answer 2

The Pollak circuit tester #PK12741 will tell you which functions are working in a 7-Way trailer connector but it doesn't tell you the location of the functions within the connector. But I can tell you that. If you are looking at the face of a…

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Answer 3

If you look at the installation instructions, I have linked for trailer wiring harness #C55369, disconnecting the vehicle battery is not required. I have also included a link to a video showing a typical installation for you.

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Answer 4

When replacing a trailer wiring connector that carries a 12 volt accessory circuit like a 7-way like the part #PK12703 it would be wise to disconnect the battery as that circuit is hot all the time and it could cause a short. But if you were…

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Answer 5

The Dual Battery Isolator Switch part #3376391050 if set to the "1+2" position will allow power to be drawn from both batteries.

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Answer 6

Hey Phil, It's ok to see 12 volts on one specific pin (pictured below). It means that whoever wired it ran a line to the battery so that the 12v hot pin on your tow vehicle's 7-way can charge the trailer battery a bit while you tow. Power…

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Answer 7

Yes, we can help with that, there is an array of plug adaptors available. Without seeing the exact plug on your cord, I think what you need is the Mighty Cord RV Power Cord Adapter Plug, #A10-1550DAVP. This is a 50 amp female to 15 amp male adaptor.…

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Answer 8

Instead of using two adapter the part #A10-1550DAVP would be a better option as it goes from a 50 amp twist lock female to 15 amp male like you need. Of if you wanted a longer setup the part #A10-1550D90VP is 12 inches long and has a 90 degree elbow.…

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Answer 9

Thanks for passing that on! I hope they fix the instructions going forward so I am going to post this on our site so that it might help future customers as well.

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Answer 10

There are many adapters that can work for you but not the 20 amp to 50 amp. For a 15 amp to 50 amp, use the Mighty Cord RV Power Cord Adapter - 50 Amp Female to 15 Amp Male #A10-1550 or the Mighty Cord RV Power Cord Adapter Plug - 15 Amp Male to 50…

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Answer 11

I spoke to SeaFlo and they explained to me that the battery selector switch #SE56VR acts as a sort of diverter for electricity. Off is self explanatory. 1 allows power to go from the alternator to battery or bank 1 ONLY. 2 allows power to battery or…

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Answer 12

Unless there is a battery isolator like the Buyers Products #3376391050 on your trailer and it is set to off then your interior lights should pull power from your breakaway battery. The only other thing that may be preventing this is if your…

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Battery Disconnect for Dual Battery Setup on Diesel Truck

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