interior light problems

[piking mad]

the interior light in the rear of the surf only comes on when it wants to
that is the light for the tailgate when its open some times its comes on /mostley not .
I've got a 3 GEN with a lift up door I cant fined a door push button that activates the light when open,
I have had the interior panels off and there is 2 wires that go from the light in to the loom and back to the front of the surf !!!
what activates the light when door open / cant fined any loos wires but when
I put an additional earth wire to the one side of the bulb holder it comes on
but permanent .

[Dobbslc]

I've just had this on my one.
I found the rivets on the metal strips that take the current from the plug to the bulb holder were loose.
I tried to solder them but it's made of some weird metal this would not take solder!
In the end I peened the rivet over with a small screw driver and hammer.
Not pretty but it works.
Hope that helps.

[gaztheted]

Not 100% sure, But i think i read some where that the switch is built into the tailgate latch.

[piking mad]

I thought it might be to do with the tailgate latch
so I took the latch off and sanded it and the body
of the tailgate to make a good earth but that didn't work.

[ajstars]

Same problem - I solved it by giving the latch a liberal spray of WD40 from the inside of the tailgate. Worked the latch a few times and it all started working again. The switch is actually located inside the latch so it's not really user serviceable although I didn't start dissembling it. Last fix lasted 3 years - need to do it again now!

[ajstars]

maybe i didnt fix it

So, my lights playing up again. I have tried the following:
New loom
New tailgate latch
New bulb

There is fluctuating voltage at the light fitting.
I'm going to take a look at that earth again but from what I can see the earth is a pretty solid connection to the bulb.

Any ideas?