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Old 07-25-2017, 06:57 AM   #1
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What is in this Junction Box

I am looking to install a kill switch and was wondering what is inside this junction box? It might be possible to install the switch on the cover?
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Old 07-25-2017, 07:02 AM   #2
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I'm not sure but it doesn't look like a heavy enough guage wire to handle 30 or 50 amp? I don't think I would put it there without Jayco telling you that it would work. Contact Jayco or an autherized dealership and then you'll know for sure.
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Old 07-25-2017, 07:51 AM   #3
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Good point!

Initially I thought they were sending a lot of current to the power distribution box inside the camper but the wires look to be just a 8 gauge. Realistically, I think it is just running low power devices on DC power.
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Old 07-25-2017, 07:55 AM   #4
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Battery connection and probably 7 pin connections for running lights, brake lights.
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Old 07-25-2017, 08:20 AM   #5
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Connections to TV

That is the junction box for the battery connections and to the TV. Open it up and follow the wires back to their source.
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Old 07-25-2017, 08:23 AM   #6
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Quote:
Originally Posted by A2Z_Adventures View Post
I am looking to install a kill switch and was wondering what is inside this junction box? It might be possible to install the switch on the cover?
Doesn't matter what is in the junction box, if you just attach kill switch to outside of box. I did exactly that. I took one big red wire that run into big lego looking fuse and put kill switch. I still have power to tongue jack and with kill switch off. My breakaway switch also works with kill switch turn off, meaning now power in big red wire feeding into camper. I didn't cut into any wire in box.
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Old 07-28-2017, 11:01 AM   #7
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Originally Posted by SOMBATFAMILY View Post
Doesn't matter what is in the junction box, if you just attach kill switch to outside of box. I did exactly that. I took one big red wire that run into big lego looking fuse and put kill switch. I still have power to tongue jack and with kill switch off. My breakaway switch also works with kill switch turn off, meaning now power in big red wire feeding into camper. I didn't cut into any wire in box.
SOMBATFAM,
I have the same TT as you and have been contemplating this. Can you please post a pic of your mod? I am not quite understanding what you have accomplished, but I like the sounds of it...
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Old 07-28-2017, 11:29 AM   #8
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SOMBATFAM,
I have the same TT as you and have been contemplating this. Can you please post a pic of your mod? I am not quite understanding what you have accomplished, but I like the sounds of it...
Sorry but I didn't take any picture while I was installing the kill switch. My trailer is in storage lot so can't get picture. On my battery, there are 3 wires going into the positive +. I follow the biggest red wire from the battery and see that it didn't go into the junction box. Big red wire from battery connect to a red lego looking thing on the right of junction box, that is connected to another big red wire that run into the trailer. I replace the red lego thing with a kill switch. I mounted the kill switch to the junction box and ran the red wire into the junction box to keep if out of the weather.

I use this kill switch
https://www.amazon.com/Volt-Battery-...ds=kill+switch
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Old 07-28-2017, 11:34 AM   #9
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As mentioned that is the main junction box that is providing 12v power from your battery to your trailer. The red fuse is an auto resetting 30amp fuse.

Trying to install a cutoff switch there sounds like you are making it more difficult than it needs to be. All you need to do is find a spot to mount the switch and then run the existing ground wire (remove it from the battery) to one side of the switch and then get a new wire to attach the other side of the switch to the negative terminal on the battery.

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Old 07-28-2017, 11:37 AM   #10
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Quote:
Originally Posted by SOMBATFAMILY View Post
Sorry but I didn't take any picture while I was installing the kill switch. My trailer is in storage lot so can't get picture. On my battery, there are 3 wires going into the positive +. I follow the biggest red wire from the battery and see that it didn't go into the junction box. Big red wire from battery connect to a red lego looking thing on the right of junction box, that is connected to another big red wire that run into the trailer. I replace the red lego thing with a kill switch. I mounted the kill switch to the junction box and ran the red wire into the junction box to keep if out of the weather.

I use this kill switch
https://www.amazon.com/Volt-Battery-...ds=kill+switch
I hope you did not eliminate the red lego thing. That is a 30amp fuse or resettable breaker that is protecting everything in your trailer from a short.
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