UK Car Repair: speedometer not working, wheel sensors, 1994 jaguar xj6

Question
hi there i have a 1994 jaguar xj6 3.2 the speedo is not working at all do you know how to get this fixed or how to find the possible cause thanks andy

Answer
I'm afraid there is no easy answer, the speedo is activated by one of the wheel sensors, the signal is relayed to a control module, which is more likely where the problem lies. I have had only one case and after a very exhaustive daignosis, it ended up being the module, the part no was;  DBC5608 or 9.