i have a 1998 XJ8. The license tag lights are not working. The front and rear side marker lights are not working. i have gone thru the fuses and they are all in good shape. The wiring diagram shows that the license tag and side marker lights are on a relay.
Unfortunately of the 4 brown relays and two blue relays in the Boot Fuse Box don't have any indicators as to what they control.
Does anyone know which relay is the license tag/side marker light relay?

 

I located a diagram for the relays. Thought I would post for others who might be looking.