I`ve just installed a Sony headunit in my 2003 Vectra C , along with a Revo Dab Radio . I have noticed that my Dab and radio works fine when i dont have the engine on , but soon as i start up the car i get interferance and my Dab signal drops , Also When my Sony headunit front is pushed onto headunit my `Dashboard lights come on` . even if my side or headlights are off . Is this correct anyway or do i have a problem.

There seems to be 2 sets of live & Neutral connections seperate from my harness which have to be connected which i have done...

any help will be greatly appreciated