Walyd wrote:
John Greystrong wrote:

If it's asking for the code every time you switch it on then it's
wired in incorrectly.

There is no much wiring going on as far as I can see. I have just
removed the factory installed unit and plugged this one using same
connector.

You've got the switched and battery live the wrong way round. Not a
Vauxhall is it?

John