I had the same problem with my vectra, I could not close the rear passenger door as it was stuck in a locked mode and when i tried to close it it just bounced off the latch attached to the door frame. The locking mechanism didn't change this state at all. The only way I found to fix it was to manipulate the locking mechanism manually with a piece of wire to put it back to it's original mode.
2nd electrics socket to which colour on vectra
yes
The airbag ECU on a Vauxhall Vectra is located in the engine bay. It is on the side of the engine on the passenger side.
sounds like the towing electrics have been wired up wrong
there are three on my vectra c 2002 1 is in the engine bay on the left and 1 in the passenger side of the dashboard and one in the boot
In the opel vectra it's on the side of the dash board passenger side. No. 2 - 7.5 A, and no. 23 - 30 A.
The ecu unit in a 2002 Vauxhall Vectra is located in the engine compartment of the vehicle. The computer can be seen behind the engine in front of the firewall on the passenger side.
The MAP sensor on the Vectra 2ltr Ecotech is situated on the large black rubber piping flex at the 10 o'clock position from the normal open-bonnet-looking-at-the-car position.
For the window washers, in between the battery compartment and the passenger headlight, for the radiator, at the back of the engine compartment just off center towards passenger side.
Under the car passenger side by the rear wheel
Black sticker in the drivers door jam near rear passenger door also has colour code
vectra b is the earlier engine