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#9613 | Cabriolet Top Control Unit - Wiring Modifications Required for Installation of 993-Type Unit (P/N 993 618 313 00) in 911 (3.2 Carrera), 930 Turbo, and 964 Models

This technical service bulletin (#9613) provides detailed instructions for installing the later-style Porsche 993 Cabriolet Top Control Unit (part no. 993 618 313 00) in earlier 911, 930 Turbo, and 964 Carrera/Turbo Cabriolet models. Because the original control unit is no longer available, this retrofit procedure explains the wiring modifications required to ensure full functionality of the convertible top system. Step-by-step guidance, parts lists, wiring diagrams, and updated operating instructions are included for all applicable models  

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