Looking for 2 earth straps in Engine

[Havok316]

As mentioned in the title im looking for 1) The engine Earth Strap 2) the alternator earth (if one exists).

Trying to narrow down my stereo interferance.

 

[andygolf]

ive got that bloody noise to is that what you think it will be

 

[Havok316]

Yea i think so, as you can only hear it when the engines running. Im guessing its the engine earth straps but i cant find them on the ibiza. Ice Cavern has told me it sounds like a earth problem like many other users, I have tried everything from re-earthing each amp etc to changing new cables. Im going to strip the whole lot out today and do it bit by bit starting with standard car speakers.