LED Map Lights

[blind_elk]

I'm trying to get LED lamps to work in the map lights of my X-Trail. I've purchased several different BA9S LED globes, but cannot get any of them to work when installed. I know the LEDs actually work (tested straight off the battery), and I know that I have 12V at the lamp holder.

Any suggestions as to why the little buggers won't work when installed.

[Duncan]

This might be embarrassing but LEDs are polarity sensitive....try them the other way around....

[blind_elk]

Can't change polarity. And applying +12V to centre terminal suggests that they are the correct polarity.

[Duncan]

weird, I've changed many interior lights to LED with no issue except polarity

Do the globes work if you apply 12v directly?

[niZmO_Man]

are the CANBUS compatible? no idea why they wouldn't work.
I buy Philips because they work fine and aren't that expensive

[blind_elk]

Works when 12V applied directly. Supplier claims works on Pos and Neg earth system (although doesn't work when battery polarity reversed), and CANBUS compatible.