After peeling off some more redundant insulation tape off the trailer socket loom extension, I have discovered that the part is identified as being for "Liberty/Impreza 02/03".
Photos:
Part:
Break-out connector and wire colour coding. I have used a piece of black for the tail to the trailer loom, as this is the correct colour coding for reversing lights at the trailer electrical connection socket.
I have checked that I have 12V at the end of the tail, and that the P/S and D/S reversing lights still work ... :iconwink:
. All
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Now all I have to do is solder the new tail from the break-out connector to the black wire going to the tow bar socket, then re-apply heat-shrink and insulation tape as required.