when i put my windows down theres an interference through my radio. it also changes the hummimg noise with my upratedfuel pump.
when i switch my lights on theres an interference through the radio.is it important i sort this out.ive removed the radio to see if its earthed and it seems ok.(alhough its a bit messy behind the radio).

 

Yes, it's important...if the sound of your pump is changing, so is the flow. Don't operate your windows at WOT until fixed

I'd start by checking all underbonnet earthing connections. May be worthwhile to do the full earthing mod at the same time, but do fix this issue first.

Richard

 

i will cheers.