Multipla Tow bar fitting/wiring colours

[aideybiz1]

Fitting a new whitter tow bar to my 2003 JTD multipla, and all good until I accessed the wiring to find 13 coloured wires! all the colours of the rainbow and plenty more to go round!!! Can anybody tell me which colour represents the tail brake and indicator lights??? also my shiney new trailer board has a fog light so also the colour for this? Would really appreciate the help on this one cheers aide

 

[Most Easterly Pandas]

Fitting a new whitter tow bar to my 2003 JTD multipla, and all good until I accessed the wiring to find 13 coloured wires! all the colours of the rainbow and plenty more to go round!!! Can anybody tell me which colour represents the tail brake and indicator lights??? also my shiney new trailer board has a fog light so also the colour for this? Would really appreciate the help on this one cheers aide

You'll need to work it out yourself manually a Fiat chop and change wiring colours on their production line as often as I change my underwear.

I assume you've purchased a 7 way bypass relay to fit?

 

[BikeDoc]

Easiest way is probably to pop the covers off of the rear light clusters, and check the wires going to each particular Bulb.
Most Trailer Looms get joined into the loom close to the car's light fittings (it's easy to do, and keeps the connections out of the weather), using those Blue 'Scotch-Block' connectors, you probably got some in the kit.
Make sure you get a good Earth connection, to avoid that all too common 'Disco light syndrome'

 

[aideybiz1]

Sorry bout delay in answering got called out!!! but thanks both for the advice and yes have the bypass relay thingy ma bob! will go for direct access to the light clusters appreciate your responses, cheers aide

 

[mike1987]

i fitted my own tow bar on a 03 multi by a 12v circuit tester trying to i.d wires from the back of the lamp unit is almost impossible i spent about an hour trying to figure out which wire did what untill my m8 brought me the tester round after which i had all the wires labled within 10 mins