Had dash cam fitted by Halfords on Jaguar dealers recommendation on my new 2020 AWD P200. After 6 months messages appeared to say that certain electronic functions were not working. Having called out Jaguar assist, they thought a nodule(?) was faulty so booked in to dealer. Kept the car for 3 weeks but said the dash cam was hard wired to the fuse box and was causing the messages to appear. Now I have a £40k car with a 12v wire dangling to the 12v source. Took up with Jaguar direct and they closed tanks with the dealer. Would appreciate some guidance on what to do next without invalidating the warranty.