Peter and John, a picture of my car whilst in build showing the spigot in John's pic (above heater hoses) plus two more low on left hand side of box towards rear - zoom to see. Apologies but now realise these have nothing to do with air-con fittings.

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Parts book is no help in finding the heater box drain pipes. Do I need to look in cabin footwells Peter?

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone