Manual

Page 35 of 279 EMS-4 Install and Tuning Guide_Rev 1.6
The vehicle speed sensor must be a hall-effect device. It is used to detect wheel speed for use
in various EMS-4 software functions.
Harness Connections
Vehicle Speed Sensor Harness Connections
Name
Wire
Wire
Color
Stamping
VSS Ground
22
Black
PWR GND
VSS Hall Input
22
White
VSS
+12.0 volts
22
Red
PWR
PWR GND – Connect to vehicle speed sensor ground pin.
VSS – Connect to vehicle speed sensor signal pin.
PWR – Connect to vehicle speed reference voltage pin.