LED Indicators

[beardydave]

If they are sold as LED indicators they will probably be 12V LEDs, check where you bought them or on the packaging to see if they are.

If they were giving out some light then they were wired correctly and not over volted, as they would have blown instantly.

Try again on the battery, checking polarity on the wiring is right.

Also, LEDs are directional, if they are the older dome type bulbs then they only give out light through the dome, it could be that the bulbs are side on and you are loosing most of the light which isn't being reflected.

Newer PCB mount types are flat and have a zigzag pattern on them, but they can still only be seen in 1 direction - straight ahead. If they are just LED bulbs then make sure they are pointing straight out through the lense.