Outer Limits 4x4 Board

I have a 2000 GU and when i go around a corner the int. light flickers,
anybody know what it is and how to fix it?

Check all doors are closed properly, the rear barn doors are known for problems, you will need to adjust the catch if they aren't closing tightly.
Cheers.

all doors are closed, and have adjusted barn doors but still does it.
what if i unplug wire to barndoor switch?

sounds like the body is flexing enough to cause a door to open and the door switch to make contact. Like you said above- try disconnecting one door switch at a time until you isolate which one it is.

Could just be a case of sticking a thin piece of rubber where the switch makes contact to push it in a bit further.

The other thing is- have you gat an aftermarket alarm with a tilt sensor or anything like that?

I do have alarm with tilt, may be that. Ill try it.

One of your sensors could be wired into the light circuit alarm I/P (in parallel.)

I did that with a shock sensor on the inlaw's GQ and then had to wire a relay in to disable it's O/P when the ignition was on- otherwise the interior light kept pulsing over bumps etc!!

we had this prob on the GU, to solve the problem, we added a couple of layers of tape, to the point the switch contacts the door, and this solved it, we tried adjusting the door several time.