Thanks for the all the responses / advice fellas - but this sounds very technical to a novice like me?!
DogBucket - am I to wire the resistors into the loom/circuit? (told you I was a novice!)
Read the thread from the link and sounds like a plan - now it's just putting it into practice

Anyone near Wilmslow?!
Looks like a diagramme is required - story of my life if you listen to the mrs!
More help please. Thanks again for taking the time to respond.
Glynn