My 2015 Mazda 2 (DL) doesn't beep / chime / buzz when I lock or unlock using the remote. Mazda say this is not an option on my car.
Only the indicator lights flash (one when locked, twice when unlocked.)

Some forums suggest adding a 12v piezo buzzer to the central locking relay mechanism that sends the indicator flash signal, so that I get the beep / double beep activated at the same time.

Has anyone done this?

Just wondering where the wire from the central locking relay is that activates the indicator flash? Would it be in the driver side door panel?

Thanks