Just finished installing my 4 channel DIY Power Distribution Module.
One channel used for Fog Lights. Enabled by IGN and switched by button from dead Heat Demon set.
One channel for USB socket, enabled by IGN too.
One channel for 12v Hella socket, directly connected (via fuse of cause) to batery. I using it for battery tender.
And one channed remains spare. Perhaps I'll do LED stripes lighting one day.
Project page with schematics and instructions here: https://openpdm.xren.me/