Does someone know what and where the most likely cause of a central door lock not working on an 83 300D? I'm assuming its a vacuum system leak but any likely spot?

Also, if a 300D has not been started for 2 years, how would you proceed before trying to start it again (pour oil in the top filler first maybe?).

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the sooner you start... the sooner you'll get done If it ain't broke, don't fix it.. Its always simpler to tell the truth...
2007 Honda Accord EX
2007 Honda Accord SE V6
96 C220
97 Explorer - Found Another Home
2000 Honda Accord V6 - Found Another Home
85 300D - Found Another Home
84 300D - Found Another Home
80 300TD - Found Another Home
Previous cars:
96 Caravan
87 Camry
84 Cressida
82 Vanagon
80 Fiesta
78 Nova
Ford Cortina
Opel Kadet
68 Kombi
Contessa