Farewell and thanks
Join Date: Feb 2003
Re: 166 Boot Badge.
Right - managed it successfully! I expect that it will be the same or very similar on the 166, but here goes.
Gain access to the rear of the badge by unclipping the carpet lining from the underside of the boot.
Shining a torch onto it, you should see a black plastic fitting with a hook running over the top pin/lug sticking through from the badge. You need to unhook that by pushing it towards the passenger side of the car. ( It will be tight, but there is a place to grip it with your fingers/thumb.) Once the top pin is free ( this is the part that the badge swivels on ), you need to turn the same big plastic fitting to be able to free the bottom part of the lock. Think from memory it was clockwise. It helps if you fiddle around with the body of the lock from the outside - with the key in for added grip. You should feel it starting to shift after some effort.
Once free of the boot lid, you will see a handle shaped cap on the end that moves when the lock is operated. Blind faith is what I went on here, but you can take it as fact that you just pull it off. I say "just" - you will need some effort and probably two screwdrivers to lever the thing off. No doubt delaers have a tool for this. The cap will go flying across the room, but is quite strong and won't break. Once off, you will see a brass coloured spring clip that needs to be pulled off, releasing the lock. You can then swap it over to the new fitting. And refit in the reverse order.
I will take a photo of the lock if you need me to so that you can see what the back looks like to help in the removal as it is probably easier once you know what the thing looks like.