A few more updates!
So this is the majority of the interior wiring for DCC as well as a photo of 4 brand new wiring looms for each of the arches, the 2 fronts with DCC plugs and level sensors, the rear just with additional DCC plugs.
On top of this there is about 15 new wires through the firewall into the engine bay, lots and lots of work!
Some more areaview updates -
The control module arrived, 5Q0907556C is the most common module for datasets and is also the earliest revision used so should be compatible. The 4 HSD connectors for the cameras and the 1 coax for the output to the infotainment unit.
The poor quality camera was sent back and a used genuine one was sourced instead, much better quality!
As you can see, no wires coming off the back of it, instead a HSD connector type A waterproof.
We are now going to talk more DATA CABLES! Again....
So there are two types in play here, we will start with the simple ones.
Often called Fakra, but this is the connector type, instead they are Coaxial cables, a single copper core with a braided sleeve around it to prevent interference, used for video signals and for radio/antenna signals. These are quite easy to make up - a wire stripper, soldering iron, crimping tool and a magnifier glass.
The cable choice was RG174 as this most closely matches the OE RTK031 but without the huge price tag!
Ive used around 40 meters of the cable so far - tv tuner, phonebox and amplifier, areaview output, parking heater remote signal.
Quite straight forward compared to the next type....
LVDS HSD Fakra so this type of cable luckily isnt used too much for my retrofits, but it is a low voltage high speed data transfer setup - very similar to a USB port.
It contains 4 individual cables surrounded by a metal film, surrounded by a braided sleeve, surrounded by insulation.
These 4 wires are power, ground, RX, TX - meaning with this single connector a component can get all it needs and send and recieve data - such as a tiny areaview camera.
The OE connectors and cables are made by rosenberger - but they dont want to sell me any parts in quantities less than 10,000.... so ill stick with the RFDOTOP ones at £4 each the quality is very good and matches rosenberger ones exactly.
The cable type im using is a Dacar 535 and the tools im using are a crimping tool, soldering iron and terminal crimping tool down to 0.03mm
Now you would think each end of the cable goes pin 1 to pin 1, pin 2 to pin 2 and so on.... but no. These cables crossover, so pin 1 at one end will become pin 4 at the other end, heres a chart to make it easier.
Every fakra HSD cable does this, side A and side B so it gets more complicated. Now if you have a single cable run its easy because side A in, side B out, but if you connect 2 together you go side A, side B, side A and it wont work. So cables always need to be in odd numbers - like they are on all VAG cars - or if you dont want to do that, you get a A to A cable, so when I run too cables it goes side A, side A, side B and you still get the switchover.
So now we have solved the issue of keeping the crossover but with less cabling and connectors.
Now building the cables is a different task all together.... very hard and as i learn to do it, ill post more details.
The only other thing to note - there are around 10 different colours/codes for the connectors and they are not interchangeable (except code Z/water blue which is universal) so for the connector for the cameras themselves, they are Code A/black but they must be waterproof connectors (even inside the car) as they are longer to reach inside the camera.