Car: 2008 1.8 EX, Silver
Join Date: 8th March 2014
Thanked 14 Times in 10 Posts
Great guide, many thanks.
I fed the cable slightly differently as I no success feeding it down the tailgate, instead I went from the lights end towards the roof, which went much smoother, though I had to jam my fingers in the hole to fish the cable out.
I also couldn't feed it down to the side of the rear door, cable just wouldn't go through despite many attempts. Instead I fed it up into the headlining (same hole, but feed it horizontally, above the existing cable bundle) and tucked it round the rubber door seal to get down to the floor. You can see into a bit of the headlining by removing the door seal, same as you do for getting access to the side in the guide.
For attenuation I figured maybe it didn't need attenuation as everybody says, just that the input in the nav unit wasn't terminated. A 68 ohm resistor between the two video wires did the job (I'd have used a 75 if I had one). Ideally this should have gone at the front of the cable next to the nav unit, but I was already soldering the connection at the back so I stuck it there. Works great.
If you're building your own video in cable you could attach the resistor to the connector.