You can tell I'm an electronics whiz.
Took one battery out and it didn't work. I connected up the 2 terminals of the removed battery and it did work, and was dimmer. So that may be an option.
I opened her up and see attached photo. I'm thinking now that I could swap all 3 resistors, and the 2 outside white LEDs for red ones, so have dim and brighter option.
Questions:
1. The 2 outside resistors I was expecting to be the same, but they're not. From my limited understanding of colour coding, one is 22 ohm, and one is 55 ohm (I think they're green, not blue). The middle one is also 22 ohm. How do I figure out which ones to swap?
2. Assume that to halve the brightness, double the ohms - so 44 ohms etc? How low can you go? Limits?
3. How to identify the white LEDs and which red ones to get?