DigiTech AA-0375, User Manual, Page: 2 / 6

Technical Specifications:
•
Power: 12VDC
•
Dimensions: 81(L) x 52(W) x 21(H) mm
Instructions:
•
Connect the module according to the wiring diagram
depending on your use of the module. Incorrect wiring
will damage the module and your vehicle if you
connect it in the incorrect polarity:
o
Three connections should be made to your car,
(1) +12V (ignition switched); (2) chassis (0V); and
(3) sensor or car battery signal. The car battery
signal is best taken at a point close to the battery
for accuracy.
o
Use the car’s wiring diagram to find these
connections, and then use a multimeter to check
that they’re correct (e.g. check that the +12V
supply switches off when you turn off the
ignition).
o
Confirm that there is a fluctuating signal in the 0-
1V range on the oxygen sensor lead (the car will
need to be fully warmed up) or that the signal
coming from the airflow meter, or MAP sensor
changes when the throttle is blipped. NOTE: The
0V connection for the Voltage Display should be
made at the ECU or to a terminal that is directly
to a chassis point.