Indiglo plasma gauges and heater control panel can be connected to the same inverter.
Volkswagen Transporter T3 plasma tacho glow gauges tachoscheiben dials
In order to illuminate Heater Control panel, you need Inverter (power supply), which has to be bought separately in our shop. All the plasma dials and HC panel can be connected to one inverter. So in case if you already bought plasma dials (inverter included into the price), you dont have to buy another inverter.