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Installation Manual Section 6
PUREFLOW® DIESEL SYSTEM
AirDog™
WIRING HARNESS
The AirDog™ is equipped with a relay controlled wiring harness that connects directly to the
battery and is activated by the OE fuel pump connection. Optional "low fuel pressure"
warning light is available.
6 - 1 Connect the RED lead to the POSITIVE (+) post of the driver's side battery.
Connect the GREEN lead to the NEGATIVE (-) post of the same battery.
6 - 2 Route the wiring harness to the AirDog™ and connect the 3 pin Deutsch connector
to the corresponding connector on the AirDog™.
6 - 3 Secure the relay to the vehicle at either the engine side wheel house or firewall near
the steering column.
6 - 4 Disconnect the OE fuel pump lead from the ECM connection (Deutsch, two pin
connector).
6 - 5 Connect the AirDog™ 'Relay activation lead' to the OE fuel pump ECM connection.
6 - 6 Optional light kit. Remove 1/8” npt plug located in top of base, below the motor.
Screw in pressure switch and tighten. Fasten the two wires from the wire harness to
the pressure switch.
NOTE: If the optional indicator light is not used, place electrical tape around the 2
indicator light terminals on the wire harness, keeping both spade terminals separate.
6 - 7 Drill a 5/8" hole in firewall approximately 2 inches to the door side of the steering
column to allow entry of the Indicator Light harness into the passenger compartment.
6 - 8 Route the Indicator Light harness through the firewall. Install the grommet supplied in
kit around wiring harness where it passes through the firewall to prevent chaffing.
6 - 9 Install Indicator Light and Dash Plate in lower left dash area or where desired. Drill an
11/16" hole at the desired location to mount the indicator light assembly. Install the
adhesive backed dash plate by removing the backing and matching the corresponding
dash plate hole with the 11/16" hole.
6 - 10 Properly assemble the indicator light in the dash plate. Connect the two female
connectors on the wiring harness to the spade connectors on the indicator light.
BE SURE TO PROPERLY ROUTE AND SECURE THE WIRING HARNESS TO
THE VEHICLE.
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