2012 Yaris reverse trigger wire

[ucsmfu]

Trying to wire reverse camera to stock head unit for 2012 Canadian Yaris Le

Just wondering if anyone has come across it in the ECU area ? I've already have the reverse trigger wire properly connected to the 28 pin connector at the back of the head unit. Just need to find the reverse trigger wire from ECU so I can properly tap it :)

Can't seem to find it, have tried a few connectors with some help from forum members but to no avail.

2012 model was still built in Japan not from France yet.

Any help would be greatly appreciated.

Thanks