black light MF fuel management gauge

[Davetje.be]

Hi,

I have a multifunction fuel management meter gauge.

I think everything is connected properly

The meter self is working
But the yellow/orange blacklight on the gauge doesn't function.

Is it possible that the blacklight is broken? is so how can i test it?
and can i replace that blacklight without to buy a new gauge?

Thx in advance

Dave

[Sequoiha]

dont understand what a black light is, but if the blue wire is hooked to b+ or yellow key on power and the black wire is hooked to ground then the light in the gauge should work. if not cant repalce the light,

[Davetje.be]

i meant back light. srr

I rechecked my wiring and everything looks normal.

So i think that the lamp is broken.

Thx for reply.