OK - I don't see the PCB though
and making it yourself - as far as I recall (did such things 30 years ago) - requires chemicals

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DK540iA


Current car ^: E39 540iA Limo '97
Ex: E32 735iA '91 http://ivao.org/~mh/BMW/BMW%20E32%20735%20M.htm
Ex ex: Toyota Corolla '88, Opel Vectra '92, Nissan Micra '90,
Mitsubishi Galant '91, Toyota Carina '73, Morris Minor traveller '69