Vauxhall Vectra vectra b help with leak from conduit hose in boot

Hi i noticed today i had a leak in my vectra b comeing in my boot from somewere so i checked it and after pouring water over the back of car it is clearly pouring through the hose that covers the wires at the top left hand side of boot when open,i think its called a conduit hose .

Does any know what i will have to do to fix this as i am unsure if there is a conector close by were the hose is to disconnect the wires and fit a new hose ?

Any help appricated,

thanks