Post by noahangel11 on Mar 8, 2020 11:16:18 GMT -8
Hi.i am new to The forum.
I was hoping someone could tell me what the electrics in the photo are for. They reside on the trailers hitch below the propane tanks and are inline with the plug and wiring that go to the vehicle. I wonder if they have something to do with the electric brakes, as the wiring to the brakes go through this box. I have run all new signal wires to the external lighting and markers, and didn’t know the function of this box and if I can just bypass it and go straight to the plug for the vehicle? I would leave the brake wiring alone, although I don’t even know if the y work or not. Such a light trailer, and pulling with a Tahoe, not sure the brakes are something to work on or if they will make a huge difference pulling and in the life of the Tahoe brakes.
That is a box used to connect external trailer lighting and brakes to the wiring harness that plugs into the tow vehicle. In the first picture, that is a automatic reset relay that goes to the electric brakes on the trailer. If you're having issues with your lights, start at the tow vehicle plug in, if you have power there then go to the box your are asking about (can't think of the name of it to save my life right now) and check there. If you're getting power through there, then it may be a ground at the lights themselves.
I'm sure somebody else will chime in shortly and give better details.
Update: Trailer Wiring Junction Box as listed on etrailer. Knew we just talked about that recently. Went to Mobiltec's Patrion class, remember somebody asked about it Tuesday evening.
Last Edit: Mar 8, 2020 17:02:29 GMT -8 by WhitneyK
Experience teaches you to recognize a mistake when you've made it again. '12 Weakender TD (homebilt)(44 States +BC & around 45k miles) '67 Shasta Compact '67 Bee Line Wasp
Post by noahangel11 on Mar 8, 2020 18:14:10 GMT -8
Thank you. I found out through more digging that it is a junction box for the light wiring, but it is also a breakaway switch. There is a plug attached to the end of the junction box that gets pulled out by a cable, should the hitch come undone from the vehicle. This particular one relies on 12 v from the camper battery, as there is no built in battery in the junction box. New breakaway kits come with a rechargeable battery in them that gets charged by the aux voltage. When the plug gets pulled the battery kicks in and applies the brakes so the trailer is not a runaway. I bought one of those and installed it, but I have not connected the brakes to it yet as I need to pull the wheels and check the electric brakes.
You have already discovered the purpose of the tow wiring J box and break a way switch. I would replace this box before towing the trailer. It is old and no doubt corroded. (My 65 Kit had the same set up) The brakes are easy to inspect and connect. You will need a controller in the vehicle to operate them.
Most tire shops can inspect the brakes for you if you want a pro opinion. I'll be moving this thread to 12 volt and tow wiring...