I believe that is correct. I never found any electrical drawings provided with the RV-10 builders drawings that come with the kits.
There is an RV-10 electrical reference in the form of the OP-37 Wiring Harness document which does show some possible routing and includes a basic schematic. But these are older documents that don't really address current avionics systems. I received the OP drawings on the RV-10 electronic pdf format drawings that I purchased on CD from Vans (now provided on a flash drive instead of a CD for $10). There are also a few other old OPs in the package that address lighting, but for older non-LED lights.