Hi guys i have noticed on they way back from work that there is a clicking noise coming from where the relay is located so i have turned the radio down and listened for a while and noticed that my lights will dip and than come back to normal after the click noise. it comes from round the headlight switch area but i think its the relay its a clickin noise like a switch being turned off and on

dont have a clue what it could be does anyone have any idea or had similar problem?
Cheers guys