There is a wire on the 4.0 XJS which when grounded (momentarily) clears the check engine light. It is yellow and green and has a purple connector on the end of it. Does anybody where this wire is (if there is one) on the 6.0 V12 ? I found it on the 4.0 but can't locate it on the 6.0. Please keep answers on topic, and no guesses. Thanks.

 

You can disconnect the battery to clear codes.

 

Er, yes I know that, why would I do that when there is a wire specifically for that function?

 

I gave up looking for the wire but I did find that the codes cleared if I pulled the PI (petrol injection) Memory fuse. Much easier than disconnecting the battery and dealing with the issues that go with that.