
VMAC - Vehicle Mounted Air Compressors
VMAC Technical Support: 888-241-2289
VMAC Knowledge Base: www.kb.vmacair.com
71
Control Box
☐
Remove the plastic trim panel from the doorsill and the kick panel on the driver
side.
☐
Install the control box in a convenient location in the cab, positioned so that
the wire harness will reach the compressor. The most common location for the
control box is between the driver side seat and the door.
Throttle Control
☐
Using cable ties, secure the throttle control under the dashboard, next to the
OBD II port. Ensure it is away from moving parts and positioned so that the
buttons and LED lights are accessible.
Connecting the Wiring
☐
Unplug the OEM cable from the accelerator pedal and plug it into the matching
connector from the throttle control. Plug the cable from the throttle control into
the matching connector on the accelerator pedal.
☐
Connect the interface harness to the matching connector from the control box.
☐
Replace the doorsill trim and the kick panel.
☐
Attach the green wire with ring connector, running from the control box, to a
good ground under the dashboard.
☐
Locate the OBD II port (generally located under the dashboard, beneath the
steering wheel column).
☐
Remove the fasteners securing the OBD II port to the dashboard; this provides
easier access to the wires at the back.
☐
Peel back the tape on the harness a few inches.
The wires populating pins 6 and 14 (pins 19 and 20 on the back of
the OBD II) are a twisted pair (white wire and blue wire).
Figure 106 — OBD II connector
☐
Splice the light blue wire from the throttle control to the wire at pin 20 (blue
wire at the time of writing) of the OBD II port (Figure 106).
☐
Splice the grey wire from the throttle control to the wire at pin 19 (white wire at
the time of writing) of the OBD II port (Figure 106).
☐
Remove the glove box compartment to gain access to the wire run behind it.
☐
Route the blue wire from the throttle control, as well as the black and red wires
from the white 4-pin connector, over to the SEIC interface located behind the
kick panel in the passenger side footwell. There is a wire run behind the glove
compartment. Secure the wires as necessary using cable ties.