Hi, wonder if you could help a bemused jec member! When using my 2003 XKR on a night, since last Friday something weird is happening with the dashboard illumination. When first switching on, with lights on auto, dashboard illuminates and if car is started immediately will stay on. Else if you wait for check sequence sometimes dash illumination comes back on with starting and sometimes goes off. Manually going through off(illumination on), side, main and auto may result in dash lights failing either when moving to side or full lighting. When illumination goes off at the side lights setting stage then side lights also fail to come on, headlamps always work ok. If you manage to get illumination working with lights on, the illumination of the dash usually fails if main beam is used, pretty sure this also happens sometimes if brake lights are used or you go over a larger than average bump in the road. Any ideas, is it just a loose connector? Any help or pointers would be most appreciated.
Is this car the all alluminium xk model ? if so it sounds like a bad earth the earth studs are all bonded to the body and are prone to detatching from the body and causing all strange probs. the favorite ones are both front behind the wheel arch liners, if its the older xk still sounds like a bad earth poss behind the headlamps. the only other probs i had was wires coming detatched/poor connection from the column switch, hope this helps
X100 older model , will check suggestions.
Thanks Paul, much appreciated.
Rich
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The headlamp circuit is rather simple. From the 15 amp RH headlamp fuse, there is a red w/yellow trace that goes to the RH high beam. Out of the 15 amp LH headlamp fuse, the wire going to the LH Hi beam is solid red. Both of these wires should have power when the headlamp relay is energized. The wires from the Hi Beam bulbs going back to the switch should both be red w/black trace. The wire going from the headlamp relay to power the 2 15 amp fuses is white. The headlamp switch applies a ground to illuminate either the Lo Beams or the Hi Beams.
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