Electrically Activated Vacuum (Type E); One-Wire System, (Type F) - Directed Electronics Python 450 ESP Installation Manual

type F: one-wire system
This system usually requires a negative pulse to unlock, and cutting the wire to lock the door. In some vehicles,
these are reversed. It is found in late-model Nissan Sentras, some Nissan 240SX, and Nissan 300ZX 1992 and later.
This system is also found in some Mazda MPV's and some Mitsubishi's. One relay (optional) is used to interface
to this type of system as follows:
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