300tdi starting problem

95,300tdi,disco
hi guys problem with my disco starting it wont turn over one minute then turn over the next i've checked the batery and thats fine; is there a relay that might need changing, as when trying to start it there a clicking sound from the footwell on both sides

thanks mixy

i have a 96 300 disco an mine did the same for ages an then just wouldnt start ever if you run a direct line from the battery to the back of the starter motor i bet she starts lol the problem will be with the control unit hidden deep in the dashboard and it will have a dryjoint or 2 its a pain but well worth doin you can find instructions on here how to do it takes bout 2or 3 hours but works forever hope this helps

chris