How to connect several LED arrays together?
One of the torches was completely duff so i dismantled it to have a closer look at its innards. They run off 3 AAA batteries, so that's 4.5V each. There are nine LEDs on each array but I can't see any resistors. I think the negative terminal battery pack is connected to the casing of the light as there are solder points on the array that aren't directly connected to any of the LEDs.
On the highlighted picture:
Red - Positive LED terminal
Blue - Negative LED terminal
Yellow - Where I believe the +ive LED terminal to conect to the -ive terminal of the battery pack through the casing.
If more information is needed, just let me know and I'll see what I can do. Any help you guys and gals could give me will be greatly appreciated, cheers.