Step 6: Assuming you've fixed the leak ...
I also used silica gel bags because the weather was cold and damp. It's best to do this with the carpets exposed to help ventilation of the carpet. Also you will still have access to the heater core housing to double-check that that pipe joint isn't dripping even after the heater has been used.
When carpet is dry replace black plastic side panels, and carpets. Then fit the under-dash panels into position, taking care to connect the panels correctly with the guides before screwing securely. If the panel is not in its guide you'll be able to bend the edges unreasonably.
If you try this instructable, you are very welcome to 'Add Comment' about how you got on and how to improve these instructions. Thanks. Dom.
Spurious bonus material: This stunt was a part of a Swedish Volvo commercial demonstrating the 850's crash survivability.