Automotive door lock device

An automotive door lock device comprising:

• a lock proper having a latch mechanism installed therein;
• a main cover plate fixed to said lock proper, said main cover plate having therein an interchanger mechanism operatively engaged with said latch mechanism;
• a single socket structure defined by said main cover, said socket structure having a terminal member of said interchanger mechanism exposed to an interior of said socket structure;
• a first auxiliary cover plate having a shape to be detachably held by said single socket structure and having a first actuating member installed thereto, said first actuating member being brought into an operative connection with said terminal member when said first auxiliary cover plate is properly held by said single socket structure;
• a second auxiliary cover plate having a shape to be detachably held by said single socket structure and having a second actuating member installed thereto, said second actuating member being brought into an operative connection with said terminal member when said second auxiliary cover plate is properly held by said single socket structure;
• and
• latch means for achieving a latched engagement between either one of said first and second auxiliary cover plates and said single socket structure when the one auxiliary cover plate is fully inserted into the interior of said socket structure.