Also I noticed two strange wires in behind the fusebox which weren't connected to anything but because they were different colour codes I didnt join them up

Pictures below
It actually could be yellow/grey .. my eyesight is dreadful. I have noticed the white/blue goes to where the stereo would be. And it definitely has a factory plug at the end by the fusebox.GT_II wrote: Mon May 24, 2021 9:36 am None specified in that colour order - doubt the order make any difference.
If it’s any help, when I fitted my stereo there was a rat’s nest of butchered wires behind the one I took out. I wrote down the following. I’ve excluded the speaker wires as too off-topic.h11poc wrote: Sun May 23, 2021 3:40 pm Its just those two wires by the fusebox now. Could they be for the electric Arial ?? Mine is broken so I don't know if it was or not.
Just to confirm, at least from the 1988 model year, switched live for the radio is red/brown and and yellow/white is the vehicle speed signal (GALA), as used by the VW Gamma 2, 3 and 4 radios:WreckTangle wrote: Thu May 27, 2021 1:37 am
Elsewhere, I have seen reference to Yellow/White being the speed signal for speed-variable volume. If that’s true it would go to pin A1. I have seen someone refer to Blue/White as a “dimmer” circuit but I doubt that’s true and probably a confusion with the Blue/Grey illumination circuit. IMHO Blue/White is most likely provided for a remote amplifier nudge and so it would make sense for it to be left n/c somewhere that an amplifier could be readily installed. If I’m right it would also connect to pin A5 (along with the green wire) at the radio if in use. That leaves the red/brown wire about which I haven’t got a clue. Just revisiting the mystery tonight I found this on a Mk1 Golf site which suggests it could be a key-in-ignition switched live.
https://vwgolfmk1.org.uk/forum/index.ph ... reo-wiring
If so, that would have been a more elegant solution than the “blower switch” switched live in mine but I didn’t bother to investigate because I already had the latter.
Thanks. I suppose it is funny in a way that a previous owner of my 1991 GT2 went to the trouble of dismantling the centre console in order to scotch lock a switched live into the blower circuit when there was a factory switched live there all along. Unfortunately, that is not untypical of the sort of “improvements” the 15 previous owners of my car effected.GT_II wrote: Thu May 27, 2021 10:04 am Just to confirm, at least from the 1988 model year, switched live for the radio is red/brown