How do I replace the wiper switch on a 2007 Suzuki Forenza?

use a meter and test motor and power connections

The cover pops off. Remove the nut , wiggle it off and replace.

The Hazards and flashers both work off the same "combination relay, it is defective, replace it.

I need to no way does the speed sensor located on a 2007 Suzuki forenza sedan

Most wipers are replaced with the entire blade and holder assembly, and many no longer facilitate blade itself replacement. It is worth it, as the arm and spring wear, over time.
The entire blade and holder easily separate from the arm and the new one clicks right in.

that the sign of replace wiper motor

This is a simple slide out and slide in replacement. get your replacement Blade arm and follow the on package instructions.

how to replace the high and low beam head light bulbs on my 2007 colorado?

replace the dimmer switch for the headlights.

wiper switch?