Hi and welcome to the community
Not many of those about in the UK let alone anywhere else so bit of a gem.
If you could let us know what the model number is, there may be an installation diagram on the support side which we can look at but not sure how the wiring would tie up with a car since I know over the years, wiring looms changed to add/remove wires especially for audio.
Either way, lets see what we can do to help. :)
