My door switch lighting on both front doors and my center console lighting go out and come back on simultaneously when I hit a bump. Any advice on where to start or a wiring diagram that I can locate a likely plug or ground that is going bad?

 

Before I forget a X300 came into a salvage yard Thursday that may have a original alternator for the taking , I didn't look at it as was looking at other things .

Now back to your lights

See page 92 or abouts

Is there a group of lighting in the print that matches your issue ?

I see a single bulb center consol switch pack and a driver and pass door switch pack , is that the area of interest ?

They have different grounds so that rules that path out

By putting the small dimmer knob on the steering column to override does that make a difference as you test drive it ?

http://www.jagrepair.com/images/Auto.../jagxj1997.pdf

Bed time now

 

You need to clean and tighten the grounding stud on the back of your head unit.

https://www.jaguarforums.com/forum/x...09/#post338514

 

Seems no change but that makes sense since my dah lights are unaffected and they are on the circuit. I have it fairly well isolated using those diagrams. Now I need to hunt for wires and plug. I'll probably start with center console and check grounds then branch out from there. Probably a loose plug somewhere.

Thanks for the help and ideas!!!