I've successfully installed the EB PC-8 on my 2017 DL650 XT. The one device I added was my grip warmers and I did that while doing the installation. At that time the main fuse(s) between the battery and the PC-8, per the instructions, were not installed. That actually made sense; but, brings up this question. When adding additional devices/wiring to the PC-8, is it necessary to remove the main fuses between the battery and the PC-8?