I have an owner's manual for a Pioneer KE-3050 or KE-3020 free to a good home. I presume one of those must have been the OEM stereo for the 1988 Peugeot 505 GTI Wagon because the one I just bought had it in with the car manuals. The radio had been changed (and I have just changed it again) so the manual is of no use to me.

PM me if you want it with your address and I'll post it out.