How to Install a Reverse Camera in an Astra J with Navi 900

[TomekT]

My GVIF interface came with a CANBUS box but it didn’t work (and you don’t need it) so I had to cut some of the wires on the loom between the boxes to get directly to the +ve, -ve and trigger wire.

Few hints about those can decoders
- Reverse trigger from decoder will work only with the engine on, so remember that when init testing your fresh installation
- In some cases you might find picture losing synchronization, especially when in reverse and turning. It's can decoder fault. In mine, bought from fosp.cn I had to cut one of the wires between decoder and interface. As per instruction, wire was described as not used... Apparently it was causing the issue. I'am not giving wire color, cause it might be different, depending on manufacturer. Just try one by one, starting with the ones you don't know their purpose.
- In case of stripes traveling over the screen when on reverse - it might be due to testing signal sent by cars computer to check reverse light bulb. You would need to get separate acc and gnd, i.e. from rear power socket, and additional relay triggered by reverse light positive wire (green-white). Such relays were available at aliexpress or you can make one yourself. Ali ones in most cases had power connector in place, compatible with most of aftermarket reverse cameras.