roadtripper
Active Member
Posts: 311 
Likes: 116
Currently Offline
|
Post by roadtripper on Jun 11, 2017 9:03:58 GMT -8
I'm redoing all the wiring hook up now. The new breakaway switch that was on the tongue wasn't connected. It has 2 wires, a hot and white ground. The existing trailer brake has two wires. The ground I'll tie in to a common ground bus. The other will go to a junction box and tie to the proper wire of the 7 way. The breakaway I know wants to tie to the 12v system of the trailer, not the truck. My question is, do the trailer brake hot and the breakaway hot tie together? I was just going to run the hot from the switch to its own circuit on my house system, but how does it trigger the brakes in an emergency? Not sure of the fuse size for that either.
Thanks much for the help.
|
|
Ten
3K Member
Posts: 3,432
Likes: 1,467
70 Shasta 16SC + 1964 Airflyte
Currently Offline
|
Post by Ten on Jun 11, 2017 12:18:57 GMT -8
Route power from the onboard battery to the brakes hot side through the switch. There is no ground or fuse involved.
The switch will only activate in an extreme situation, and simply provides (full) power to the brakes so the trailer will stop.
|
|
roadtripper
Active Member
Posts: 311
Likes: 116
Currently Offline
|
Post by roadtripper on Jun 11, 2017 13:08:11 GMT -8
Thanks, Ten.
|
|
|
|
Post by bigbill on Jun 11, 2017 19:48:14 GMT -8
The brake away switch is just that, a switch. They used to say hook red to battery hot and white to brake power wire. The brake away must be hooked to a battery on the trailer, it must NOT get it's power from the tow vehicle. You always have to hook the cable to the tow vehicle with enough slack that it won't be pulled unless the trailer comes unhooked. You should never hook it to the vehicles hitch, always hook it to a place that will still be fastened if hitch fails. I have seen people loop it over the trailer ball but I have seen trailer balls shear off which would allow the cable to come unhooked. So give some thought to where you hook it.
|
|
