I want to clean the engine bay of my 2005 Civic. I purchased Autoglym
Engine & Machine Cleaner but was concerned when I read the
instructions it said to hose with plenty of water to rinse off. My
main concerns were water ingress into air vents and electrical
components. Can someone please advise which areas I need to cover with
cling film. I've attached a photo of my engine bay. Maybe someone
could be kind enough to mark the regions with red circles in
Photoshop.

Many thanks for your help!

http://img63.imageshack.us/img63/6691/12102009024.jpg