Mk3 Panda Pop central locking wiring

[Bannedbiker]

Hi guys,
A good friend of mine has a 2012 Panda Pop, with key operated central locking, we are trying to add a remote central locking kit to the car.

I'm very confused by the wiring of the central locking in this car!
In the door loom there is a black/white cable and a orange/green cable, each showing a +12v volt signal relative to the chassis earth when the car is unlocked or locked respectively. We assumed that this showed that the central locking is wired in a positive pulse configuration.

We've tried putting 12v directly onto both of these cables to test how the car works, but we can't get the car to un/lock from any external signal. (Literally taken a fused cable from the battery)

We've looked at the other cables in the door loom, but found nothing to help us.

I've search this forum and the entire internet and not found anything Helpful!
Can anyone offer us any advice?
Does anyone have a wiring diagram for the central locking system of the car they could share with us?

Thanks in advance!