I have a 1997 xj6l with the 4.0/ltr eng. The other day the airbag warning came on then the next day none of the gauges work no speedo no tach and none of the warning lights come on when ignition turned to on. The back ground lighting and the directional work. I have cked the two fuses under the aft lt passenger sseat and another fuse in the trunk, they are intact . this came on all of a sudden with no warning. Any suggestions are welcome thank you.
FIXED!! found a bad " Aux positive relay" in the trunk fuse box, one of the three sources of power to the instr cluster. The fuse was intact but was not getting power from its bus because its switched thru this relay
Good news and thanks for posting the outcome! (best)