Towbar Electrics

[Matti Ghofen]

I need to wire the 7 pin plug for a trailer onto a 2003 C3 HDi.

 

With this model, can I simply connect to the relevant wires in the boot area (the old fashioned way!)?

 

Any opinions or advice or wire colour codes would be greatly appreciated.

 

Thanks

MG

[Johndouglas]

Yes you can - but use a Smart 7 relay. I did my 2005 C5 in this way and it works fine. Also you'll need an audible warning for the trafficators.

[Matti Ghofen]

Thanks John.

 

I've wired tow bar electrics way back when... but nothing on a car as new as this one.

 

What does a 'smart 7 relay' do please? I've never heard of them!

 

MG

[Johndouglas]

Smart 7 relays. See them here:-

 

http://www.towsure.com/product/13145-Smart...y_Can-Bus_Relay

 

It ensures that the onboard computer doesn't know you've interfered with the car's electricals.