Hi folks. I have managed to sort all my other issues out and there have been a few but stuck on the final problem of the glow plugs staying on. There is a fault code stored and wont go away. I replaced all 4 burned out glow plugs and test all ok but what I have noticed is that when the ignition is on the plugs stay live constantly and only go off when engine is started so I have removed the 60 amp fuse so as not to burn them out. I have replaced both grey relays which control the plugs but no difference. I see from looking on net that there is another bigger black glow plug relay so does anybody know where this is situated and also is it worth changing the cylinder head temp sensor if I can find that also lol.

Thanks guys.