Reading posts above it doesn't sound like you have a dip unit or relay just the actual column dip switch. Suggest you fit a relay though after you have sorted the switching problem to reduce current through those ageing dip switch contacts.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone