Relay location

Well I own a landrover discovery 1 and I continue hearing a clicking sound of a relay within the passenger glove box. Each time it clicks the light of the exhaust pipe/system either goes on or off. Its most likely the relay of the oxygen sensors though there are many relays behind the passenger glove box and don't know which one exactly it is. Any help would be highly appreciated

Ask in the disco section in the link below

Discovery:
https://www.landyzone.co.uk/forum/land-rover-discovery.8