[Unit] Description=GNSS init service After=usb-hub-reset.service v2x-ieee802.11p.service [Service] Type=oneshot ExecStart=/usr/bin/sh -c "echo 0 > /sys/class/leds/gnss_rst/brightness" RemainAfterExit=yes [Install] WantedBy=multi-user.target RequiredBy=multi-user.target