I received this copper TS10 a few days ago and I finally got some time to do that mod that I also do when I receive a TS10.
When shipped, the aux leds (regardless of colour) are always too bright and drain the battery too fast for my liking.
For the orange aux, I added a 510Ω resistor, which dims it down to a comfortable brightness IMO. I don’t have the numbers right now but the battery will also last much longer in high mode. Here are some pictures to show the difference.
High mode: left - no resistor added, right - 510Ω resistor added
Low mode: left - no resistor added, right - 510Ω resistor added
High mode after modding: 510Ω resistors added to both lights, much better
Yes and no. While you can use the aux in all the strobes with the latest firmware, there are still only 2 brightness levels (a hardware limitation), and not all of them work like you would expect.
At the moment: