Retrofitting Interior Light Delay Unit

Interior Light Delay Unit Fitting Instructions. Smithy318i

Once you have sourced your Interior light delay relay (PN. 61311373974 and 61311380233)

   * Remove the lower steering column cover (3 plastic clips)
   * Remove the plastic trim that covers the driver’s side speaker in the foot well.
     This requires removal of the single screw at the bottom left of the speaker grill.
     This panel can then be pulled free of the door-seal that holds it in at the bottom.
   * Remove the speaker – should be only three screws left as the fourth also held the plastic trim that you’ve already removed.
   * Undo the two screws just below the speaker void – see photo below:

   * Reach down inside the speaker void and withdraw the central locking relay, mounted on a triangular metal plate.
   * You now have access to the interior light relay socket – see photo below

   * Plug the light relay into this plug. (It only goes one way round) 
     then attach the light relay to the central lock relay with a wire tie. 

   * Now you need to swap these 2 wires.
     Disconnect the brown/purple wire from the door switch, and plug it into the brown/purple socket (marked below)
     Then plug the brown/yellow connector into the door switch. (also marked in the picture below) 
   * You also need to join together the brown/green wire and the brown/yellow.
     Cut the brown/green wire about 2 inches above the plug and join the plug end to the brown/yellow wire.
       

   * Your light delay relay is now installed.
   * Refit the central locking module, then the speaker and kick panel.

  LEGAL DISCLAIMER: I am not responsible for any problems that may arise following this procedure.
                    Any work you do is at your own risk.