Relay and fuse box identification and location | Jaguar XK8 Range 1998. Relay and Fuse Box Identification and Location. Relay and Fuse Box Identification and Location. NOTE: RELAY COLORS ARE WRITTEN AS CASE COLOR (STRIPE) / CONNECTOR COLOR. FOR EXAMPLE, BLACK (BLUE) / BLUE INDICATES A RELAY HAVING A BLACK CASE WITH A BLUE STRIPE AND A BLUE CONNECTOR. I have a 2000 Jaguar XJ8, in the trunk fuse box, no power Sep 15, 2015I have a 2000 Jaguar XJ8 , in the trunk fuse box , no power to relay # ***** fuel pump and fuses 7 and 8 no power . I checked the fuel pump shut off under the passenger kick panel and it had not kick and it did not need to be reset . Question is what powers the system back to the rear fuse box , I need power to fuses 7 and 8 and relay number 4 .