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WIRING COMPRESSOR  

(Fig. 7 through Fig. 9):

9.  The compressor’s red wire 

is connected to a (+) 12-volt 

power source, using the fuse 

provided.  

IMPORTANT! The fuse must 

be connected directly to the 

power source. 

IMPORTANT! The red fused 

wire must be connected to 

a (+) 12-volt power source 

controlled by the vehicle’s 

ignition switch. This will 

protect your compressor 

from running continuously 

and being damaged if an 

air leak develops when the 

vehicle is not in operation. 

Suggested connection points 

are: blower motor, windshield 

wiper motor or the accessory terminal on the fuse panel. Make sure the 

connection point has a wire that is as heavy as the compressor’s wires and 

the connection point is capable of handling 25-amps. CAUTION: remove 

the fuse from the fuse holder until installation is complete.

OPTIONAL: A switch can be installed into the compressor’s red wire. This will 

permit the driver to turn-off the system if it is not required. (Fig. 7)

10.  The compressor’s black wire is connected to a rubber plug. NOTE: the 

rubber plug will have two black wires, both wires will connect to the tank’s 

pressure switch. 

IMPORTANT: It is recommended that both black wires be pushed forward 

so that the terminals are extending out of the rubber boot exposing the 1/4” 

female terminals (Fig. 8.).

11.  Select one of the black wires with the 1/4” female terminal, connect the 

terminal to the pressure switch. Repeat the procedure for the other black 

wire. NOTE: There is no polarity, so either black wire can be connected to 

either pressure switch terminal (Fig. 8).

12.  Push the rubber boot onto the pressure switch (Fig. 9).

13.  The black wire with the looped terminal is connected to ground; secure 

the wire’s terminal to either the (-) side of vehicle’s battery or under any 

metal body bolt. Make sure that the ground connection is free of rust and 

paint. NOTE: The compressor is now ready to be used.Install the fuse 

back into the fuse holder and the compressor will automatically start. 

When the pressure drops below 80 PSI in the tank, the pressure switch 

will automatically turn on the compressor. When the tank pressure is 

approximately 120 PSI the compressor will automatically turn off. If the 

compressor does not shut off after 4 minutes of running time, check all air 

hose connections for leaks. Use soapy water or bubble solution on each fitting, while the compressor is 

pumping. Use a thread sealant if leak persists after tightening.

CAUTION: Do not touch compressor or fittings with bare hands during or immediately after usage, they 

will be hot.

IMPORTANT! Compressor is equipped with an internal THERMAL OVERLOAD PROTECTOR. If compressor 

should shut off before the tank has been filled to the pressure switch’s turn off pressure, do not attempt to 

restart compressor. Allow compressor to cool off for approximately 40 minutes before resuming use.

Fig. 7

Fig. 8

Fig. 9

25 AMP 

FUSE

Push both black wires 

onto the pressure 

switch terminals. 

There is no 

polarity, so either 

black wire can 

be connected to 

either pressure 

switch 

terminal.

Push the rubber 

boot down over 

the pressure 

switch

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