Adjusting device for a fuel injection pump

An adjusting device for controlling an annular slide (8) relative to a control bore (7) of a pump piston (6) in a fuel injection pump having a fluid-tight housing, said housing comprising a lower part (15) and a cap (16), an electric control motor (10) firmly disposed in the lower part of said housing, a molded substrate secured in the lower part of said housing, said substrate (25) comprises an electrically insulating material, conductors (28) embedded in said substrate for connection of control elements which are connected to said control motor for controlling said control motor, a plug connection in an opening (35) of the cap said plug connection including elements (30) having ends (31) in pressure contact with the ends of said conductors (28) in said substrate with ends (32) of the connection elements protruding from said substrate away from said conductors (28), said plug connection is firmly connected to the substrate (25) which has an extension (34) protruding from the substrate and integrally secured thereto, said extension (34) passes through an opening in said cap (16) with a tight fit and in a sealed manner.