Every single make, model and year of vehicle is going to be slightly different so its impossible to give a detailed answer. In general however, I'd start by referencing your owner's manual which may have instructions and illustrations. See sources and related links below to lookup the correct back up light bulb part numbers.
they light up
A: There is no such a thing as simple circuit if the bulbs are put in series the light will dim if put in parallel both bulbs will light up the same provided the source can sustain the power increase
The filament on normal light bulbs require a higher current of electricity to light up, and are more resistant to electricity as well. This causes it to use more electricity and generate more heat.
The maximum voltage of incandescent light bulbs is up to about three hundred volts. They can also go down as low as 1.5 volts. Incandescent light bulbs are the least efficient lighting system. More modern methods like flourescent lightbulbs are far more efficient.
Modern light bulb filaments are usually Tungsten not Carbon. However early bulbs used things like silk coated with Carbon. Filament means thin thread. The bulbs are filled with inert gas like Argon to stop the filament from burning up with oxygen. Arc lamps use Carbon rods though.
You must first remove the Trunk liner back far enough to get to the light cavity. There are two bulbs that make up the center third brake light. Just twist the light out of the lock position and replace the bulbs with appropiate replacements and then screw back in.
Repair or replace your reverse, neutral safety switch.
The tail light bulbs are accessible from underneath the back of the truck, up inside the rear of the pickup box.
Filament of light bulbs are made up of Tungsten.
light up
When two light bulbs are in place, there will be a circuit created where electricity can flow through both bulbs. If the circuit is intact and the bulbs are functioning, they will both light up. If one of the bulbs is faulty or the circuit is broken, then both bulbs may not light up.
Bulbs light up when an electric current passes through the filament, which heats up and emits light. This process is called incandescence.
they light up
There's not a huge market for light bulbs that don't let any light out.
Yes, a circuit with two light bulbs connected in series can light up. Current flows through the first light bulb, then through the second, allowing both bulbs to illuminate. If one bulb burns out, however, both bulbs will go out.
I assume you only need to change the bulbs. Go into the trunk and look up. You should see the wires leading to the mounting point for the third brake light, you candisconnect the connectors and then change the bulbs this way.
Sounds like the light bullb\bulbs for you gauger cluster is out. You will have to remove the cluster to get to the back of this to change the lights.