2005 Suzuki Swift Steering Wheel Controls (AU)

Does anyone know how the signals from a Suzuki Swift 2005 model (Australian delivered) (Clarion Model PS 2659N-A stereo ) control the built in stereo? In the factory stereo are two inputs called SR1 and SR2 which are the steering wheel controls. I want to install a ebay double din stereo which has steering controls . The Made in China unit has two wires that are the remote input. Does someone out there know if the output wires from the Suzuki Swift would directly control the inputs of the Chinese unit? The Chinese unit has two 5 Volt positive signal inputs and this is relative to the ground wire (Thus we have three wires).

seems kind of strange to me. it might work but probably not on every car. what brand is your chinese made DDin?

I think the brand is OUKU? http://www..au/itm/250978445947?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649