Interior lights won't turn off!

[Milhouse1]

Hi
I've got a 64 plate transit custom and yesterday all of a sudden the rear cargo bay lights wouldn't turn off when I locked the van. The cab interior light turns off, but having check all doors are closed properly etc, the rear lights stayed on for a good 1/2hr before eventually turning off. They also stay on when driving! I have previously upgraded them to LED's so they are bright in the back (bulkhead removed and rear seats fitted) and I just can't work out why they won't turn off.
Any ideas gratefully received!
Mil

[Mussels]

Did the problem coincide with the bulb change?

[Sparkeselectrical]

It's still under warranty, so take it to dealers

[Treespotter]

Is one of the overhead interior light switches in "on" position?

[Treespotter]

I mean the interior light behind the overhead storage. The switch in the middle is probably flipped in the wrong position. Mine is always situated in the middle position.

[Milhouse1]

Hi
Ive double checked the light position and this isn't in the 'on' position. It has been running fine with the new lights in, but is now intermittent - coming on whilst driving, and sometimes working normally. I am tending towards it being a fault with the lighting somehow, so will need to focus on that I think.
Cheers for the input!

[Veki007]

Or some of the switches could have bad connection.But probably is faulty switch.

[Milhouse1]

What I don't understand is which switch it could be? As lights were direct replacement for what was previously fitted (and wired in to turn on/of with doors/ central locking) and no specific switches.

[Veki007]

Probably rear door switch

[aerialdave]

Side door pin switch is prone to being snapped off I've done it twice causing this problem

[SteezySteve]

Just been reading this as we needed a mod to get the lights off when we are sitting in the van at night to stop the bugs coming in!
Just removed the plug-coupler in the back of the sliding door push-pin spring switch. After 30 seconds it dropped out! Perfect quick mod!

[richbee]

Just been reading this as we needed a mod to get the lights off when we are sitting in the van at night to stop the bugs coming in!
Just removed the plug-coupler in the back of the sliding door push-pin spring switch. After 30 seconds it dropped out! Perfect quick mod!

Anyone know if it is possible to do similar for the back door light switch on a DCIV?
There's no obvious light switch, could be inside the door catch