['LIVEWIRE?']

turretslug, you are partly correct in that a lot of Blaupunkt car radios & stereos were badged for, among others, Ford, Rover, BMW, etc., but the Memphis SQR88 was only sold by Blaupunkt Dealers, of which the firm for whom I worked between 1972 & 1995 was one. Somewhere I may still have the service manual for that model, among quite a lot of Blaupunkt manuals. You are also correct in that Car Stereos were/are close-packed with small and delicate components. In addition, Blaupunkt tended to use quite a few Hybrid Circuits made on thick-film substrates, which were exclusive to their products, and not replaceable by any open-market spare parts. Not a problem during their 'service life', since dealers could order these items as & when needed, but now that these stereos are 25-30 years old, as I noted, replacements are 'unobtanium'. I forgot about cleaning the contact strips of displays-a delicate job with no guarantee of success.