Ok two things. Firstly, the best way to test for a leak and where moisture can be getting in. I have heard of people letting off some kind of smoke device inside the car and watching where it escapes. Provided its a dark coloured smoke, this should be easy enough? What is the best thing to use for the smoke.
Edit: Scrap the stereo bit.
Thanks in advance for any help.
Edited by Black.Ghost, 06 March 2014 - 04:44 PM.