australian 2011 factory underseat amp 6 speakers

Hi All;

Would anyone know the type of amp that is installed with the australian prius ? i have bought a replacement HU ( see thread Factory look gps on ebay ) though i cant seem to get the front door speakers working (other 4 are working fine).
Jeremy has also bought this unit and has all his speakers working, with his UK/EU Prius.
Im not sure if the Aus model is different or if it follows the american model ( amp switched by canbus)
would appreciate if anyone has swapped out their standard single cd radio with an aftermarket and could offer some guidance =)

Have tried searching for the forums and google without much success, either in finding information of the actual amp or any codes i could try with my scanguage to trigger the amp.

The wiring diagrams i have found and provided in the other forums seem to indicate an AMP pin on pin9 on the 10pin connector. I might try and see if i can power the OEM radio on the bench and measure if there is any voltage on Pin9 from the oem HU

the OEM radio is a fujitsu ten FT0001a
The Amp under the driver seat is a fujtisu ten FT0013a

The amp is located under the drivers seat, so it may be simlar to this one "92811-separate-amp-under-pass-seat"

ps. sorry still cant post links, as im still under the newbie post limit

edit, added amp model number.