120 volts
All Mustangs operate on a 12 volt system.
Dishwashers are typically designed to operate on 110 volts.
Most fuel pumps operate on 12-14.2 Volts. (system voltage). Keep in mind that most fuel pumps operate off a relay and the relay is turned on and off by the engine computer. Most computer control the GROUND circuit of the relay to power it on and off. It is fairly common to have to replace the fuel pump in the tank as the brushes wear out after about 100,000 miles
A motor will operate on 400 volts.
All standard factory installed electrical devices operate on 12 volts.
The 8085 and 8086/8088 operate on 5 volts.
Some small electric motors will operate with an input voltage of 10 volts or less. Some bulbs for vehicles will operate on < 10 volts (but less bright than they would operate at their normal 12 volt input voltage.
At 120 volts you can operate any equipment up to 1200 watts. At 240 volts you can operate any equipment up to 2400 watts.
Rewiring a 110 volt HID magnetic coil ballast to operate on 220 volts would require replacing the existing ballast with one designed for 220 volts. Attempting to rewire the ballast could lead to overheating, electrical failures, or even safety hazards. It is recommended to consult a professional electrician or purchase a new ballast suitable for 220 volts.
All Volkswagen Golfs, Jettas, and Rabbits use a 12 volt ignition system. So their cigarette lighters operate off of 12 volts as well.
Light switches typically operate at 120 volts in residential settings in the United States. However, it is important to note that the actual voltage may vary depending on the specific electrical system and location.
Your description of the system is either contradictory or incomplete, therefor no answer can be given.