You had enough wiggle room without disconnecting tank? Excellent. I have mine wired in for turn signal and low beam running light, with an extra switch for high/fog. But may look at deleting the switch if I can get at that harness
It looks like most hidden place to grab turn signals is under the tank as seen in ape hanger install page 17
https://manuals.bmw-motorrad.com/manuals/WEBA/IN/BA-INTERNET-COM/PDF/77015A2AAD7_Lenker_Apehanger_bei_0L11_01_202103.pdf
I am working on this, blinkers will tie direct and replace stock, working on best spot to tap in but have run test leads and they work. Next wire trace is DRL to low beam and fog to high beam. It looks like wiring accessible immediately under front gas tank, but open to input if anyone has done...