STEP 14:
Reconnect the fuel lines to the lift pump
feed and return quick disconnect fittings. Connect
the new wiring harness supplied with the lift pump to
the original OEM harness connector and the other
end to the PowerFlo lift pump.
STEP 15:
Route the wiring harness along the frame
rail of the truck to the engine compartment. Route
the harness in a manner that it will not interfere with
any moving parts and retain it with zip ties.
NOTE: Leave sufficient slack on the harness at the
pump end to allow for plugging in the connection
at the pump before raising the tank back up into
position.
STEP 16:
Raise the fuel tank back into its mounting
location. Install the fuel tank hangers, reconnect the
fuel lines at the front of the tank by the fuel cooler,
and install the vent tube and tighten the hose clamp.
STEP 17:
Complete the wiring harness installation in
the engine bay. Mount or secure the relay. Connect
the o
range wire to the driver’s side
battery (+) OR to
the Positive terminal for the jump start connection.
Connect the b
lack wire to the driver’s side
battery (-).
Route and install the red wire and fuse tap as shown
on the WIRING OVERVIEW and FUSE TAP LOCATIONS
pages.
STEP 18:
Add sufficient fuel back into the tank to
submerge the pump bucket.
CAUTION:
Never run the pump dry or without fuel in
the tank.
STARTUP :
Turn the ignition key to RUN, but do not
start the engine. Verify the lift pump is running and
that there are no fuel leaks. Allow the pump to
prime the system for 20-30 seconds prior to starting
the engine.
