Can a 12 Volt Accessory Circuit be Used on the Spectro Junction Box For Trailers part # 38656

Question

Question:

We have a Spectro junction box on our dump trailer and are wondering if we can hook battery to junction box to maintain battery charge. And if so which terminals would we hook to?

asked by: Ron

0

Expert Reply:

The Spectro Junction Box part # 38656 can have a 12 volt accessory circuit added to it so that you could put a maintenance charge on your trailer battery but it does not have a specific pin to use for this circuit.

You would just need to pick an un-used pin in the box and run the circuit from the 7-way to it and then from it to the positive post of your battery.

expert reply by: Jameson C

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Answer 1

The best way to power the interior lights in your trailer is with its own independent battery. You will not want to use the breakaway battery. The breakaway battery is only designed to operate the breakaway and will drain extremely quickly,…

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Answer 2

The best way to get interior lights in your trailer is to have a dedicated 12 volt battery, and battery box like #329-HM318BKS mounted to the trailer. This gives you the power needed while you're not hooked to your truck. For lights I…

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Answer 3

You can route the grounds from your brakes to your junction box like part #38656 but most people just ground the brakes to the trailer frame. The frame is a ground which is why this can be done, just make sure that it is a secure connection to a…

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Answer 4

If you are experiencing power at the 1 o'clock position on your 7-way, the issue most likely lies with the trailer's wiring. With this situation, it is important that the trailer wiring is correctly inserted into trailer's side 7-way plug…

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Answer 5

The mounting holes of the Junction box part #38656 that you referenced are 7-3/8 inches apart and are 1/4 inch in diameter.

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Answer 6

The grommets included with the Spectro Junction Box, #38656, have an inner diameter of .603 inches. These grommets would definitely be too small for your larger output cable and would be a tight fit with your input cable. I checked our other junction…

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Answer 7

First of all did this problem just start happening? If the trailer has always worked fine before on the same truck then it's likely a short on the trailer's brake wiring. I would start by cleaning the connector and make sure it's free of…

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Answer 8

The #38656 Junction Box won't take the place of a trailer mounted battery, but it provides a protected and organized method of connecting the wires from the trailer connector pigtail to all the various lighting, power and brake circuits on the…

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Answer 9

Yes, the battery maintainer you have requires a 12 volt power source coming straight from the battery and the center pin of your 6-way is exactly that so it would work very well for you.

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Answer 10

You can deliver a maintenance charge to a trailer-mounted battery using the +12V power circuit included in your 7-way wiring setup. The simpler method is to access the 12V auxiliary power circuit on the trailer's 7-way wiring using a junction box…

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Answer 11

On this page (typically below the product links) there is a helpful link section that will have the install instructions fo the Hopkins Breakaway kit part #20400 that you referenced. I also attached an install video that shows the kit installed as…

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Answer 12

The Trailer Wiring Junction Box part #3375601100 and Trailer Wiring Junction Box part #38656 are both pretty standard 7-terminal junction boxes. The latter is slightly smaller so there will be more places to mount it so that is what I recommend but…

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Can a 12 Volt Accessory Circuit be Used on the Spectro Junction Box For Trailers part # 38656

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