Last, but not least: the pickups!
How would your guitar be electric without a pickup!?
There are different kinds of pickups like single-coils, P90s and humbuckers and there are a lot of different pickups for sale. For some guitarist it can be a real quest to find the one they really like!
Pickups have one purpose:
They transform the vibration of the strings into a different form of energie: electricity! So the sound of a guitar can be amplified!