I have found an auxiliary plug in the rear R/H/S fuse board below the rear seat. There are three wires. 1. Black, 2 Green & Brown and 3. Purple & Brown. Does anyone know which of these wires are negative and what is positive? Are they live at all times or are they live when ignition is on?

 

It has been indicated to me that the Jaguar part No. C2A1403 is what i need. I am not sure whether this is a plug that fixes into the auxiliary plug or is a replacement. I have looked at the Jaguar Part List and it really isn’t clear. This part has been indicated that it is no longer available. However, surely there must be a plug that fits this auxiliary plug? Anyone know if there is?

 

Look for a quality socket such as : and wire it in yourself.
The originally installed one will have three wires going into it a brown, brown with green stripes and a black.
These are wired in the following manner.
Brown.... live straight from battery
Brown with green stripes..... live when the ignition is on
Black..... neutral.

 

Not sure whether USA cars have different coloured wires to UK cars, but I have one Black, one Brown & Green and one Purple & Brown.

 

Now discovered that Green & Brown = constant live supply
Purple & Brown = No Supply with ignition on or off
Black = Negative.

Not sure why there is no supply on the Purple & Brown.