finmac Posted June 8, 2019 Share Posted June 8, 2019 Any ideas as to most obvious places to try first/causes? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 8, 2019 Member Share Posted June 8, 2019 Fuse.Visual inspection and wiggle of wires and connections at the horn end.Have you got a multimeter and appropriate wiring diagram?What sort of switch?Jonathan Link to comment Share on other sites More sharing options...
Doctor Posted June 9, 2019 Share Posted June 9, 2019 Fuseit helps to replace them all with the LED light which goes off when the fuse is blown.Cave at: in order for the horn fuse to light up, you need to press the horn button - the current has to flow. Link to comment Share on other sites More sharing options...
Wrightpayne Posted June 9, 2019 Share Posted June 9, 2019 Bad earth! Link to comment Share on other sites More sharing options...
MADMALC Posted June 9, 2019 Share Posted June 9, 2019 Try a temporary earth wire from the steering column to the battery or a good known earth point. Does the horn now work? This is based on trying to solve this very problem on a csr. It appears that the earth is via the rack mounting to the chassis and then via the steering column. As a temporary fix we attached a very flexible wire to the steering column to earth, (It has to be able to rotate freely from lock to lock) I think this fix is still in operation.If you find your problem please let us know. Link to comment Share on other sites More sharing options...
David Brown Posted June 9, 2019 Share Posted June 9, 2019 Had to replace the horn on my previous 7 after it succumbed to corrosion. Link to comment Share on other sites More sharing options...
finmac Posted June 11, 2019 Author Share Posted June 11, 2019 Thanks guys, haven’t got near the car yet as it’s stored in my work.The switch is the big black push type (like the starter switch but black). Link to comment Share on other sites More sharing options...
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