Car is Toyota Passo 2012 .
Did not like the sound of the orignal 12w speakers plus no speakers in the
rear dash . Already done that DIY .
- Tools used

- Started by removing the top Cover grill of the speakers.
very easy just pry on the edges with a plastic wedge.

- This is the terminal you have to dissconnect.

- The new speakers Sony Xplod GTF 1038 .These are 4 inch speakers.

- Cut the original Terminal and install these two splices.

- Along with that installed the speaker terminals.

- install the new speakers Note that i had to cut the Alternate bolt hook for proper fitting
they were interfering with the sides.

- Terminals attached and speaker is placed .

- Installed Picture .closed the grill after checking the operation.

Hope this helps a lot of passo owners
DIY took 30 mins for each side if you have proper tools .