Flex-a-Lite 778 without Controls Toyota Tundra Electric Fan Kit; 00-06 - Manual (Page 3)

19. From top side of engine compartment, finish tightening shroud top mounting bolts.
20. Reattach radiator hose, refill radiator with coolant, and reattach radiator cap.
21. Reattach A/C return hose to original mounting point.
22. Find the thick red and black wire in the kit. Determine the length needed to connect the red and
black power leads on the VSC to the battery terminals and trim appropriately. Crimp a large
yellow ring connector to the end of the black wire and connect to
the negative (-) battery terminal. Connect the other end to the
black wire on the VSC with a large butt connector (yellow sleeve).
23. Locate the fuse holder but DO NOT INSTALL THE FUSE UNTIL
ALL WIRING IS COMPLETE. Attach a large ring connector to one
end and a yellow insulated butt connector to the other end of the
fuse holder. Attach the ring connector to the positive (+) terminal
of the battery and connect the other end to the thick red wire
found in the kit. Determine the length of wire needed to reach
from the fuse holder to the red wire on the VSC and trim appropri-
ately. Use a yellow insulated butt connector to connect this wire to
the red wire on the VSC. You may use the 2ea. small screws to
mount the fuse holder if desired.
24. Find a circuit in a fuse box that is “hot” only when the key is in the
“ON” position (example: “Radio”). Attach the included fuse tap to
fuse (see Detail D & E). Attach a blue female connector to one
end of the thin red wire (included) and connect to fuse tap. Deter-
mine length of wire needed to reach VSC and trim to appropriate
length. Attach a blue female connector to the end of the wire and
connect to terminal #9 on VSC.
25. On the top side of A/C compressor find a plug-in connector with 3
wires (see Detail F); locate the green wire w/ black stripe and
attach supplied thin green wire by way of a piggyback connector.
Determine the length of wire needed to reach from the piggyback connector to the VSC and
trim appropriately. Crimp a pink female connector at the green wire’s end and connect to termi-
nal #8 of the VSC.
26. Locate temperature probe. Gently push
the probe through fins in radiator as
close to the upper radiator hose as
possible with ¼”-½” of the probe pro-
truding out of the front of the core.
Install the rubber cap on the front side
of the probe (if possible). This will give
the VSC the most accurate engine
temperature reading. Determine length
of wire needed to reach VSC. IMPOR-
TANT: Strip the insulation on the tem-
perature probe wires back about ½”
and fold wire on itself to effectively
double the thickness of the wire before
connecting pink female connectors.
Attach these wires to terminals #10 &
#11. Both wires need to be connected but it doesn’t matter which wire goes to each terminal.
27. If manual switches (Flex-a-lite #31148) have been purchased, attach them as follows. To over-
ride engine temperature to turn fans off, connect the switch to terminal #5 on VSC to send a
ground signal. To override engine temperature to turn fans on, connect the switch to terminal #6
on the VSC to send a ground signal.
Detail D
Detail E
Detail F
09-02-09 part no. 99777 Page 3 of 5