I soldered and heatshrinked all the ground returns and power leads to the warning lights at the top left of the panel. The grounds will mostly come to a common wire routed off to the forrest of ground tabs on the firewall (each connected by heatshrink'd D-sub pins for ease of maintenance), but one wire is grounded by the EMS on alarm, powered by the Master, as is the Low Voltage Idiot Light from Perihelion Design. I checked the LVIL on my power supply and it works just as advertised, which should illuminate whenever the alternator is off line.