From the factory it will have a 6 volt, positive ground system.
However, it is popular to replace the original system with a modern 12v system.
just so you know, all trucks used to have a full 24 volt system and cars had a 6 volt system so the design is not a nightmare. still a lot of tractors about with a 6 volt system. now a good electrician can connect a 12 volt unit to a 24 volt system if he knows what he is doing it is just a matter of knowing where to do it on a battery. you can also buy a voltage converter and wire it in. and yes you can still buy 24 light bulbs Before you go deep inside this, check the voltage on the cigarette lighter. It should only be 12 volts. The 24 volts are used in starting the truck only. By thinking this through, designing a vehicle that worked on a 24-volt electrical system would be a disaster. No one would buy it. All the current electrical components for vehicles are for 12-volt systems. Lights, gauges, radios - everything! How much trouble would it be to replace something like, say, a map light if a 24-volt lamp had to be located? Alternativley Check the powercable as many of them can work on different voltage say from 10 to 30 volts and power the gps with the correct voltage.
No, the source voltage can not change to a lower voltage without using equipment to do so.
The unit used to measure voltage is the volt, symbolized as "V". It is the representation of electric potential difference or electromotive force in an electrical circuit.
Yes, a 110 volt device can be plugged into a 125 volt receptacle. The voltage rating on the receptacle is only there as the highest voltage supply that the manufacturer recommends their equipment be connected to.
To change the voltage of a 12-volt battery to a 6-volt output, you can use a voltage regulator or a step-down transformer. A voltage regulator will reduce the voltage to the desired 6 volts, while a step-down transformer will step down the voltage from 12 volts to 6 volts. Both options will help you achieve a stable 6-volt output.
Originally it would have been a 6 volt system.
12 volt
The library
If your 1949 truck is a CHEVY or GMC and it still has the original electrical system, it would be 6 volt, negative ground. If it is a Dodge or a Ford with the oringinal electrical system it would be 6 volt, positive ground.
12 volt batteries if fully charged should show 14.2 volts
The voltage regulator inside the alternator is bad.
The Volt
The Chevy Volt just went into production this year.
Voltage (V)AnswerThere is no base unit for voltage. The volt is a derived unit.
No, you cannot charge an 8 volt battery with a 6 volt charger. The voltage of the charger must match the voltage of the battery.
Yes, the voltage listed on the bulb is the nominal voltage and it will work perfectly on a 120 volt circuit.
just so you know, all trucks used to have a full 24 volt system and cars had a 6 volt system so the design is not a nightmare. still a lot of tractors about with a 6 volt system. now a good electrician can connect a 12 volt unit to a 24 volt system if he knows what he is doing it is just a matter of knowing where to do it on a battery. you can also buy a voltage converter and wire it in. and yes you can still buy 24 light bulbs Before you go deep inside this, check the voltage on the cigarette lighter. It should only be 12 volts. The 24 volts are used in starting the truck only. By thinking this through, designing a vehicle that worked on a 24-volt electrical system would be a disaster. No one would buy it. All the current electrical components for vehicles are for 12-volt systems. Lights, gauges, radios - everything! How much trouble would it be to replace something like, say, a map light if a 24-volt lamp had to be located? Alternativley Check the powercable as many of them can work on different voltage say from 10 to 30 volts and power the gps with the correct voltage.