There is more than one version of the Westy fridge. The best approach is
to look at the wiring diagram label on the top of the fridge as the
Bentley has some errors regarding the wiring arrangements. What year did
the fridge come out of?

The most common fridge setup has a 3 wire connector and a separate 1
wire. The 1 lone wire is for the flame on signal to the led panel and
does not affect operation. (the A/C cord is self explanatory)

The other wires are a ground wire, a 12 volt wire, and the last one is
for the fridge relay that controls the 12 volt heating element. The most
common fridges connect the last wire to the fridge relay under the
driver's seat and only allow the fridge to draw high current when the
engine is running. Early fridges have this relay AS PART OF THE FRIDGE
so the third wire is the signal wire that triggers the relay when the
engine is running.

For the more common fridges the wires coming out FROM the fridge are:
brown = +12 for fan
black = +12 for 12 volts heating element (from 12 volt heating element
relay)
blue = ground (for the above 12 volts)

If you have a relay mounted on the top of the fridge then you have an
early model.
brown = +12 for fan and 12 volts heating element
black = +12 to turn on 12 volt heating element relay (from alternator
blue lead)
blue = ground

Mark

Randy Charrette wrote:
>
> I am in the process of wireing in a westy fridge to my Syncro GL. Question
> on the 12V hook up. I'm looking at the manual and it appears the Black is
> Posative, Blue is Negative (-), and I don't know what the brown wire does???
> Any help is appreciated.
>
> Randy
> 87' Syncro (Tiico)
>
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