Brake controller

[Guest001]

Mate do you need to cut and solder the brake sense line or this will interfere??? trailer plug terminal wont be big enough to fit 2 wires will it??

If you have to ask questions like that its obvious you havent done many installations.

Which wire are you talking about If its the BLUE wire it goes in pin 5 ALWAYS You will get two wires in the one socket as they arent very thick.

I think you should be getting an auto lecky to do this or it may end in tears

It should be like this for almost all makes and includes yours

Wire Up Your Tow-Pro Elite - Wiring Diagrams | REDARC Electronics

You can take the signal on the red wire from the trailer connector you can either put both in or cut the red just before the connector and solder them together

OR you can do it properly and get the towing module for the AMAROK which is the proper thing to do.

A lot of work to install a lesser than ideal controller

[jn089]

“Wetaline2” said to use the brake sense line from the trailer plug which I would think was pin 6 red wire yeah?

Do I splice into this and solder as there wouldn’t be enough room to fit another wire in the same pin in the trailer plug would there? Or would I cause dramas cutting and soldering ?

As for the blue wire on every car I’ve ever fitted a controller too there is always a length of blue wire along the loom somewhere to connect the controller output to the plug (pin 5)

I do apologise if I seem painful but I have not seen the car yet and I want as good idea as I can get so when I get the car I can go for it and not bugger anything up! I’m very much a perfectionist






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[Guest001]

“Wetaline2” said to use the brake sense line from the trailer plug which I would think was pin 6 red wire yeah?

Do I splice into this and solder as there wouldn’t be enough room to fit another wire in the same pin in the trailer plug would there? Or would I cause dramas cutting and soldering ?

As for the blue wire on every car I’ve ever fitted a controller too there is always a length of blue wire along the loom somewhere to connect the controller output to the plug (pin 5)

I do apologise if I seem painful but I have not seen the car yet and I want as good idea as I can get so when I get the car I can go for it and not bugger anything up! I’m very much a perfectionist

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DONT USE A LOOM WIRE FOR THE BLUE RUN A NEW DECENT THICKNESS WIRE as stated in the Redarc instructions.
Only a rank amateur would use a piddly little loom wire as they arent heavy enough for the current and brakes will be useless and are the last thing you should even think about using in a VW DONT cut into the looms.

I used twin 6mm automotive wire from controller to plug and to each set of brakes as my van was 3 tonne. I still think you should get a tradesman who is familiar with the make to do it properly

I wouldnt do my own VW let alone anyone elses and Ive wired up more than my share.

[wetaline2]

Hillbilly, Apologies if it sounded like I used a single-use blade fuse, definitely not. Let me explain but stress that if you are unsure what you're doing get an autoelec to install for you.

Red wire. From battery +ve to controller with 20A auto-reset circuit breaker in-line.
Black wire. From battery -ve to controller.
Brake sense wire - From controller to 7 pin trailer plug, soldered to the brake light wire going into the 7 pin.
Blue electric brake wire - From controller to 7 pin trailer plug electric brake pin.
The 4 wires are new wires with 30-40amp rating through existing vehicle grommets.

Zero problems towing and same install on my other car (subaru) also.

[Guest001]

Hillbilly, Apologies if it sounded like I used a single-use blade fuse, definitely not. Let me explain but stress that if you are unsure what you're doing get an autoelec to install for you.

Red wire. From battery +ve to controller with 20A auto-reset circuit breaker in-line.
Black wire. From battery -ve to controller.
Brake sense wire - From controller to 7 pin trailer plug, soldered to the brake light wire going into the 7 pin.
Blue electric brake wire - From controller to 7 pin trailer plug electric brake pin.
The 4 wires are new wires with 30-40amp rating through existing vehicle grommets.

Zero problems towing and same install on my other car (subaru) also.

Yes I know what to do I wired all the extras in my Landcruiser and Caravan myself

However Im unsure of where you got all your connections for the 7 pin from because VW insist on a towing module be used so as wires are not piggybacked onto existing circuits

[wetaline2]

"All your connections for the 7 pin"... There's only 2 connections.
1) The brake sense between euro plug and 7pin - Vehicle doesnt detect this in its electrical system. Signal only sent to controller when trailer brake lights actuated, vehicle just thinks its part of trailer/trailer brake lights.
2) Pretty sure the blue electric brake wire from controller went to an empty 7pin brake pin - hence no connection to cars electrics, just the controller.
Note: I have a 13pin euro and genuine vw towbar/wiring. From the Euro plug I have a VW supplied 13 pin to 7pin adapter cable.
Note: I originally had issues with the vehicle displaying an electrical fault (globe out) warning whenever I connected a trailer - VW blamed low voltage LED globes and wouldn't help and said to change trailer lights to non-led. Ended up making up an LED load box an plugged the 7 pin adapter into it with a 7 pin out of it - VW weren't happy with that idea but working fine for years now with no more faults. New 2019 models still cant handle trailers with LED lights...

[Guest001]

"All your connections for the 7 pin"... There's only 2 connections.
1) The brake sense between euro plug and 7pin - Vehicle doesnt detect this in its electrical system. Signal only sent to controller when trailer brake lights actuated, vehicle just thinks its part of trailer/trailer brake lights.
2) Pretty sure the blue electric brake wire from controller went to an empty 7pin brake pin - hence no connection to cars electrics, just the controller.
Note: I have a 13pin euro and genuine vw towbar/wiring. From the Euro plug I have a VW supplied 13 pin to 7pin adapter cable.
Note: I originally had issues with the vehicle displaying an electrical fault (globe out) warning whenever I connected a trailer - VW blamed low voltage LED globes and wouldn't help and said to change trailer lights to non-led. Ended up making up an LED load box an plugged the 7 pin adapter into it with a 7 pin out of it - VW weren't happy with that idea but working fine for years now with no more faults. New 2019 models still cant handle trailers with LED lights...

The blue wire goes from controller to Pin 5 ALWAYS

Yes you only need the red from Brakelightsas you say I usually got it from a brakelight wire in the cab but would be hesitant on a VW.

Shame you need so many connections Always gives more things to go wrong doesnt it,