after some further investigation the end cable looks like the sony plug with 2 RCA connections which the Audi/VW cable dosen't have but are on the pinouts in the 13pin din
unit---to---sony connection
1a--blue-----sony 6
2a--green----sony 5
3a--black----sony 8 (earth)
4a--purple---sony 2
5a--red------sony 7
6a--yellow---sony 4
7b--yellow---RCA black (left)
8b--brown---RCA both / earth
9b--red------RCA red (right)
for the phatnoise cable I've mapped this out as (13pin----26phatnoise connector)
1--------24 (I think is data)
2--------12
3--------10 and 13 (power 12v)
4--------25
5
6--------4 (earth)
7
8--------14 (I think switched power)
9
10-------2 (right +)
11-------3 (right -)
12-------1 (left +)
13-------3 (left -)
so now I have both cables mapped out, the joining cable Iam not sure about
so what I have so far [phatnoise---13pin] [new cable] [Sony Plug---unit]
13pin 1----- sony
13pin 2----- sony
13pin 3----- sony 7 (power)
13pin 4----- sony
13pin 5----- empty
13pin 6----- sony 8 (earth)
13pin 7----- empty
13pin 8----- sony
13pin 9----- empty
13pin 10-----RCA red +
13pin 11-----RCA red -
13pin 12-----RCA black +
13pin 13-----RCA black -
13pin I've mapped out as below [female 13pin]
any suggestions