@kusosan I never used the Thor 300 rgb light control, as there seems to be a lot of confusion and wiring issues.
Instead I used buck converters from the aux, ardruino nano for rear lights and white led strips for front lights. That system has been working well so I didn't feel the need to change it. There's a picture of my Thor300/XR set up earier in this post.
I'm no longer running a Thor and have moved over to Ennoid MK8 vesc now.