800/1000 watt
pure sine wave
pOwer inverter with GFCi
66835
set up and OperatinG instruCtiOns
®
distributed exclusively by Harbor Freight tools .
3491 Mission Oaks Blvd., Camarillo, CA 93011
visit our website at: http://www.harborfreight.com
read this material before using this product.
Failure to do so can result in serious injury.
save tHis manual.
©
®
Copyright 2009 by Harbor Freight Tools . All rights reserved. No portion of this manual
or any artwork contained herein may be reproduced in any shape or form without the
express written consent of Harbor Freight Tools. Diagrams within this manual may not be
drawn proportionally. Due to continuing improvements, actual product may differ slightly
from the product described herein. Tools required for assembly and service may not be
included.
For technical questions or replacement parts, please call 1-800-444-3353.
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9. replace the fuse in this item OnlY 14. this device is designed for use in
with another 25 amp fuse. Replac-
ing the fuse with a higher rated fuse
or another object is very dangerous
and can result in fire, serious person-
al injury, or death.
12 vdC, negative ground systems
only.
15. allow adequate ventilation. do not
cover this unit while it is plugged
in. This unit generates heat; without
proper ventilation it may overheat,
potentially causing a fire hazard.
10. Before every use, check for any
broken parts or mounting fixtures,
and any other condition that may
affect proper operation. Any part
that appears damaged should be
carefully checked to determine that it
will operate properly and perform its
intended function.
16. leave this device unplugged
whenever the car’s engine is
turned off. To help prevent draining
and perhaps damaging the battery,
only plug this device in while the car’s
engine is on.
11. do not disassemble. aside from
the fuse, this item has no replace-
able parts. If this product is dam-
aged and/or does not function prop-
erly with an unbroken fuse, the entire
unit must be replaced.
17. make sure that the unit to be pow-
ered is switched off before being
plugged into this device.
18. do not use this device if under
the influence of alcohol, drugs, or
medication. Read warning labels if
taking prescription medicine to deter-
mine if your judgment or reflexes are
impaired while taking drugs. If there
is any doubt, do not use this device.
12. use the right inverter for the job.
Do not attempt to force a small in-
verter or attachment to do the work
of a larger industrial inverter. There
are certain applications for which
this inverter was designed. It will do
the job better and more safely at the
rate for which it was intended. Do not
modify this inverter and do not use
this inverter for a purpose for which it
was not intended.
19. stay alert. Watch what you are do-
ing, use common sense. Do not use
this device if you are tired.
20. an engine must never be run
indoors, in a garage, or any other
sealed structure. Carbon monox-
ide is produced by running en-
gines and is deadlY in a closed
environment. Early signs of carbon
monoxide poisoning resemble the
flu, with headaches, dizziness, or
nausea. If you have these signs, get
fresh air immediately.
13. do not overload this device. This
device is designed for loads up to
800 Watts at 120 Volts AC only.
Check the wattage of any device
before using this item to power it.
Some rechargeable appliances may
damage the Power Inverter or the ap-
pliance. When first using a recharge-
able device, check its temperature
for the first 10 minutes. If it becomes
abnormally hot, do not use this de-
vice with the Inverter.
21. Store idle equipment. When not in
use, this product must be stored in a
dry location to inhibit rust.
22. WARNING: This product contains
or, when used, produces a chemi-
SKU 66835
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cal known to the State of California
to cause cancer and birth defects or
other reproductive harm. (California
Health & Safety Code § 25249.5, et
seq.)
- Overload Shutoff @
15VDC
- Low Voltage Alarm @
10.6VDC
- Low Voltage Shutoff @
10VDC
Features
-Cooling Fans x 2
23. People with pacemakers should
consult their physician(s) before
use. Electromagnetic fields in close
proximity to a heart pacemaker could
cause pacemaker interference or
pacemaker failure.
unpaCKinG
When unpacking, make sure that the
item is intact and undamaged. If any parts
are missing or broken, please call Harbor
Freight Tools at 1-800-444-3353 as soon
as possible.
24. the warnings, precautions, and
instructions discussed in this
instruction sheet cannot cover all
possible conditions and situations
that may occur. it must be under-
stood by the operator that com-
mon sense and caution are factors
which cannot be built into this
product, but must be supplied by
the operator.
COmpOnents and COntrOls
Grounding
Terminal
(6)
Fan (8)
Negative
Terminal Terminal (4)
(5)
Positive
speCiFiCatiOns
Continuous Power 800 Watts
GFCI
LED
GFCI
Test
Peak Power
1000 Watts
Reset
12 Volts Nominal DC
(10-15VDC possible)
Input Voltage
Output Voltage
Fuse
120V/60Hz
40A x 4 (Blade Type)
Green LED = power on
Red LED = error (fault)
Indicators
Switch
Rocker type. ON/OFF
Outlets (16)
Switch
(15)
Output Wave
Form
Pure Sine Wave
Power Over-load Over-temp.
LED LED LED
Cables (not
included)
#4AWG or larger heavy duty
input
Figure 1
2 - 120V grounded AC with
Ground Fault Circuit Interupt
Outlets
SKU 66835
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5. This product is not a toy. Do not al-
low children to play with or near this
item.
impOrtant saFetY
inFOrmatiOn
use caution when open-
6. Use as intended only.
ing the plastic case; risk
of electric shock.
prevent body contact
7. Inspect before every use; do not use
if parts are loose or damaged.
8. Maintain product labels and name-
plates. These carry important safety
information. If unreadable or miss-
ing, contact Harbor Freight Tools for a
replacement.
with grounded surfaces such as
pipes, radiators, ranges, and re-
frigerator enclosures during instal-
lation.
warninG! all connections must
be done with the inverter’s power
switch off.
OperatinG instruCtiOns
read the entire impOrtant
saFetY inFOrmatiOn
section at the beginning of this
manual including all text under
subheadings therein before set
up or use of this product.
Connect all wires securely and
cover the connections with insulat-
ing rubber boots (not included).
store metal objects away from the
inverter.
Caution: This inverter must only be con-
nected to batteries with a nominal
output voltage of 12 volts. Lower
voltage will not operate the inverter
properly, and more voltage could
damage the inverter or the device
being powered. If more than one 12
volt battery is to be used, the batter-
ies must be connected in a parallel
circuit; batteries connected in a series
circuit will produce too much voltage.
assemBlY instruCtiOns
read the entire impOrtant
saFetY inFOrmatiOn
section at the beginning of this
document including all text
under subheadings therein
before set up or use of this
product.
set up and use preCautiOns
1. Place the Power Inverter on a flat
surface. Make sure it has adequate
ventilation and is not in direct sun-
light. Locate the Inverter close
1. Set up only according to these in-
structions. Improper set up can cre-
ate hazards.
2. Wear ANSI-approved safety goggles
and heavy-duty work gloves during
set up.
enough to the battery so that the
cables can easily reach between the
Inverter and the battery. Position the
Inverter so that the Outlets are easily
and safely accessible. Make sure the
Inverter is in its OFF position.
3. Keep area clean and well lit.
4. Do not set up when tired or when
under the influence of drugs or medi-
cation.
2. Using an 8AWG or larger ground-
ing wire (not included), connect the
Grounding Terminal to a ground-
SKU 66835
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ing point. The grounding point will
vary depending on where the Power
Inverter is installed. In a vehicle,
connect the ground to the chassis of
the vehicle. In a boat, connect to the
boat’s grounding systems. If using a
separate battery, not attached to a
vehicle or boat, connect the ground to
the earth.
b. Repeat for a second device or appli-
ance if needed.
c. Turn on the devices and/or appli-
ances.
8. After use, unplug the appliance, turn
off the car engine if it is running, and
remove the cables from the battery
and the Power Inverter.
note: The total wattage of all items
plugged into the Power Inverter must
not use more than 800 watts during
continuous operation, otherwise the
Inverter may overload.
3. Connect the cables (not included)
to the (Positive) red and (Negative)
black Power Terminals on the side of
the Inverter.
note: The connecting cables must have
1/2” ring terminals at one end for
connecting to the power terminals of
the Inverter, and alligator clips with
insulated grips on the other end for
connecting to the battery.
note: If an alarm sound is heard, turn off
the appliances and check the Trou-
bleshooting Tips section near the end
of this manual to correct the issue
before continuing.
Caution: Some rechargeable appliances
may damage the Power Inverter
or the appliance. When first using
a rechargeable device, check the
inverter’s temperature for the first 10
minutes. If it becomes abnormally
hot, do not use this device with the
Inverter.
4. Apply the parking brake to the vehicle
connected to the battery. Place the
transmission in “Park” for an auto-
matic transmission, or in “Neutral” for
a manual transmission. Start the car
engine.
5. Attach the battery positive (red) termi-
nal first and then the negative (black)
terminal. (When disconnecting, first
remove the negative terminal then
the positive terminal connection.)
Caution: It is recommended that the ve-
hicle be running when you first con-
nect the Power Inverter. Thereafter
the engine can be on or off. If you run
the Power Inverter with the engine
off it is recommended that you start
and run the engine every hour for at
least 10 minutes to recharge the bat-
tery. Doing this will help prevent any
unexpected shutdown of the equip-
ment. This will also help ensure that
there will be enough battery power
to start the vehicle. due to the risk
of carbon monoxide inhalation, do
not run the vehicle’s engine within
an enclosed area.
6. Turn on the Inverter’s Power Switch.
The green Power LED of the Inverter
will light up.
note: If the red Over-load or Over-temp
LEDs light up instead, check the
Troubleshooting Tips section near
the end of this manual to correct the
issue before continuing.
7. To power a device or appliance:
a. With the device or appliance
switched off, plug it into one of the
Power Outlets on the Power Inverter.
SKU 66835
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You should not use your car battery
to power the Inverter for extended pe-
riods of time with appliances requir-
ing high continuous load levels. The
battery may become drained to the
point that it will not be able to start
your car.
Fuses
note: Deep cycle (marine and RV) bat-
teries can be charged more times
than a car battery, and are a better
choice for repeated use of the Power
Inverter.
Figure 2
3. If the fuses need replacement, dis-
connect the inverter, unthread the
screws on the bottom panel of the In-
verter and remove the bottom panel,
being careful not to strain the wire
attached to the fan. Remove the old
fuses, and replace them with new 40
Amp fuses of the same type. Re-
place the bottom panel of the inverter
before use - See Figure 2.
Do not discharge your car battery
more than 10% of its total capacity,
and deep cycle batteries more than
50%.
maintenanCe
tO prevent
seriOus injurY
FrOm eleCtriCal sHOCK:
avoid touching any interior
parts of the inverter except
the fuses when replacing the
fuses.
1. Keep this unit clean and dry. Unplug
the unit before cleaning. Clean only
the outside of this unit with a soft, dry
cloth; never clean this unit with water
or harsh cleaners.
2. Aside from the fuses, this device
does not contain any user replace-
able parts. If it needs service, or if
you do not feel qualified to change
the fuses, take the Power Inverter to
a qualified technician.
SKU 66835
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trOuBlesHOOtinG tips
1. If the alarm sounds, this means that the input voltage is at or below 10.6 V. The
battery needs recharging. You should stop using the Power Inverter and recharge
the battery. If this is not done, the Inverter will shut off automatically at 10 V.
2. If you are unsure if the inverter will have the proper amount of current to run your
devices, add up the total of the peak wattage of the items you wish to plug into
the Inverter. If this figure is under 1000 then the Inverter will be able to start up the
items. Also, add up the total of the continuous wattage for the items. If this figure is
under 800 then the Inverter will be able to run the items at the same time.
3. If your television will not start, it is important to keep in mind that some appliances
(including many televisions) may require two to six times their wattage to start up.
4. If your audio system buzzes while using this inverter, it is because some sound
systems can not filter out the modified sine wave produced by the inverter. Use a
sound system that incorporates a higher quality power supply.
5. This inverter is made to minimize the interference with TV signals. However, es-
pecially with weak TV signals, some interference may still be visible. To correct
this, place the inverter as far away as possible from the television antenna and it’s
cables. Next, adjust the orientation of the inverter to the antenna cables and TV
power cord to minimize the interference. Also use a shielded antenna cable.
6. If the low battery alarm is on all the time, try these corrective measures: Recharge
battery if in poor condition. Next, check the battery connection. You may need to
clean the connectors.
7. If you are getting a low output voltage, try reducing the load to minimize watts. You
may have overloaded the inverter. Reduce the number of watts you are powering.
Also, keep input voltage above 11 volts to maintain a constant flow of power.
8. If you are not getting any power output, turn the power switch Off and On again,
until the green power light comes on. Your devices may draw too much power to
operate them. The inverter may be in thermal shutdown. Let it cool down and make
sure there is adequate ventilation around the unit.
SKU 66835
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parts list & diaGram
part
description
Qty
1
1
2
1
1
1
1
part
11
12
13
14
15
16
17
description
Qty
1
1
1
1
1
1
1
1
2
Housing
Bottom
Fan Cover
Bottom Fan
Input Side Plate
Terminal Support
Positive Terminal
Negative Terminal
Grounding Terminal
Fan Cover
3
4
5
6
Outlet Side Plate
Switch
Outlet
Flange
7
8
Side Fan
1
18
Flange
1
9
10
PCB Module
Trim
1
2
19
20
Flange
Flange
1
1
10
1
4
3
11
2
5
12
13
6
20
7
15
16
8
17
14
19
18
9
record serial number Here:
note: If product has no serial number, record month and year of purchase instead.
note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
SKU 66835
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please read tHe FOllOwinG CareFullY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT
HE OR SHE IS qUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS
qUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/
OR DISTRIBUTOR ExPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD
BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE
BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE
ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER
INSTALLATION OF REPLACEMENT PARTS THERETO.
limited 90 daY warrantY
Harbor Freight Tools Co. makes every effort to assure that its products meet high
quality and durability standards, and warrants to the original purchaser that this prod-
uct is free from defects in materials and workmanship for the period of 90 days from
the date of purchase. This warranty does not apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities,
criminal activity, improper installation, normal wear and tear, or to lack of maintenance.
We shall in no event be liable for death, injuries to persons or property, or for incidental,
contingent, special or consequential damages arising from the use of our product. Some
states do not allow the exclusion or limitation of incidental or consequential damages, so
the above limitation of exclusion may not apply to you. THIS WARRANTY IS ExPRESS-
LY IN LIEU OF ALL OTHER WARRANTIES, ExPRESS OR IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the com-
plaint must accompany the merchandise. If our inspection verifies the defect, we will ei-
ther repair or replace the product at our election or we may elect to refund the purchase
price if we cannot readily and quickly provide you with a replacement. We will return re-
paired products at our expense, but if we determine there is no defect, or that the defect
resulted from causes not within the scope of our warranty, then you must bear the cost
of returning the product.
This warranty gives you specific legal rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353
SKU 66835
For technical questions, please call 1-800-444-3353.
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