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© 2001 Directed Electronics, Inc. Vista, CA
This system is found in Mercedes-Benz and Audi 1985 and newer. The door locks are controlled by an electrically
activated vacuum pump. The control wire will show (+) 12V when doors are unlocked and (-) ground when doors
are locked.
NOTE:
The system must be programmed for 3.5 sec door lock pulses.
IMPORTANT!
The H2/A and H2/B wires are not required for wiring the door locks. For detailed
wiring instructions for these two wires, refer to the beginning of the Door Lock Harness (H2) Wire
Connection Guide section. Depending on the type of door lock system, there may be additional H2
harness wires that are not used for wiring the door locks.
type E: electrically-activated vacuum