The electric brake controller should show a fault indication for the trailer brakes due to the trailer brake circuit being open-circuit but it won't have any effect on the car's braking. No need to touch any of the wiring.
Gday All,
I did try and google this , feel silly asking , but most of my towing involves air activated brake system.
If i have an electric brake controller in my car ( D3 ) and i want to tow a trailer with override brake set up ... less than 750kg in my case my ex army trailer.. Do i need to do anything to the trailer wiring in regards to the electric brake signal from the car.
I have the LED lights etc sorted , just more interested in wiring for brakes in the trailer socket... does there need to be a wire disconnected from 1 of the pins.
Thanks and Cheers Bulletman
The electric brake controller should show a fault indication for the trailer brakes due to the trailer brake circuit being open-circuit but it won't have any effect on the car's braking. No need to touch any of the wiring.
MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi
Whilst it shouldnt have any effect on the brake controller, i always play safe. In the old days we used to wire trailers to do 5 and 7 pin by joining the pins. If you have no control over the trialer wiring and or other people borrow your trailer use two sockets.
I have two sockets on my cars with brake controllers one for electric brakes and one for override brakes. This eliminates any potential problems that can be caused.
It is also a good idea to have a switch on the brake controller to turn it off if not using it for longer periods, this also eliminates wiring problems occuring if a wire gets worn.
I use one round socket and one flat socket to identify which is the brake socket.
Ian
Bittern
Apologies for the late arrival on this thread.
With electric trailer brakes the vehicle should be wired to a standard 7 pin configuration.
If you wire a 7 pin male to the trailer wired to the same standard you’ll have 2 spare pins not being used,2(usually a reverse or power supply) and 5 for the trailer brakes. The remaining 5 pins are the earth, brake, tail and indicator lights.
Cheers Kyle
Bulletman, if your trailer has override brakes you don’t need a controller, as the brakes are either cable or hydraulically actuated through the trailer coupling
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