Hello
I'm having an increasing number of electrical issues with my 2009 defender SW. Today, the rear passenger indicator joined the reverse light, in not working. Changing bulbs does not help. I discovered today, that the panel which should protect those light sockets is missing and they are clogged up with mud. Do you think I'll need new sockets? I'm thinking of trying to clean out the mud and dry them off, then cross my fingers?
Thanks for any thoughts

Probably corroded connectors or similar, clean it all out then reassess what needs replacing etc