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Subject Topic: Touran - Brake lights not working on cvan Post Reply Post New Topic
PersonSmall
28/8/2017 at 9:44pm
 Location: Bournemouth Dorset
 Outfit: ABI Highway 500 CT (1991) View Small's Profile View Profile   Reply to Small Reply   Quote Small Quote  
Joined: 03/2/2003

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Hi,

Got a '05 Touran. All the caravan road lights work except the brake lights. They work on the car and they work on the caravan when tested with a tester or another car.

any ideas?


PersonJasonandheidi
28/8/2017 at 9:52pm
 Location: Dover kent
 Outfit: Vango inspire 500 duuo trailer top box View Jasonandheidi's Profile View Profile   Reply to Jasonandheidi Reply   Quote Jasonandheidi Quote  
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Is there an isolation module on the car maybe that particular part of the module /relay isn't working on the car as most modern vehicles you cannot wire the 7 pin socket straight to the lights so if the lights and 2iring work on the caravan and brake lights on car work the only thing between them is the 7 pin socket and module

-------------
Get outdoors and reconnect


PersonGeoff48
28/8/2017 at 10:47pm
 Location: Bolton
 Outfit: Avondale Dart 510 5 View Geoff48's Profile View Profile   Reply to Geoff48 Reply   Quote Geoff48 Quote  
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Possibilies,
Check fuse, ?good connection in light cluster, clean the contact points on the caravan bulbs, clean the caravan earth connections in the light cluster.


PersonOpensauce
29/8/2017 at 5:33pm
 Location: 
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First thing to check is connections on 12n towbar socket on car. It might be as simple poor connection to brake light pin which is pin6 red cable. Or poor earth. If inside of socket is corroded its best to replace socket & strip back wires to clean metal.


PersonGrampian91
29/8/2017 at 9:31pm
 Location: Midlands
 Outfit: Mondeo Avondale Gram View Grampian91's Profile View Profile   Reply to Grampian91 Reply   Quote Grampian91 Quote  
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I had the exact same thing. Its the wiring on the towbar.

The testers have a big design fault... They use LEDs which require a tiny amount of power.

A single strand of wire will light the LEDs and show the towbar socket as all good but if you put a normal bulb onto the wire it wont carry enough power to light the bulb.

Check the towbar wiring, make sure you put a load onto the wire being tested.



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