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operating instructions and Parts manual
introduCtion
This circut tester is used to test automotive electrical
systems from 12 to 24 volts. In order to save hours of
testing the automotive electrical system, it is designed
to test the system without re-connection between the
vehicles battery and the testing components. It con-
tains the following functions:
• Determine the polarity and circuit condition (short/
open).
• Activating the components with positive or negative
current without a jumper wire
• Testing the voltage and continuity of the circuit.
• Backlit digital display.
• Locate misfiring cylinders.
• Measuring frequency of the high-tension ignition
pulses can also be used to calculate the rotational
speed of engine according to the measured frequency.
• Peak detection.
• Testing the voltage of a circuit and displaying the
voltage reading on the LCD display within 1/10 of a
volt.
For testing and safety purposes, this unit contains
short-circuit protection, which can also check the
ground connection voltage drop tests. The short-
circuit protection system contains the auto reset circuit
Limited 90 dAy WArrAnty
If within 90 days from date of purchase, this product fails due
to a defect in materials or workmanship, return the product with
proof of purchase, prepaid, to OEM Warranty Dept., 3580 E.
Raines Rd. #3, Memphis, TN 38118, for repair or replacement
with an item of equal or greater value. This warranty excludes
incidental/consequential damages and failures due to misuse,
abuse or normal wear and tear. This warranty gives you specific
legal rights, and you may also have other rights, which vary,
Auto CirCuit tester
breaker so that the technician will not waste fuses
during the testing. The extension cable with this unit is
long enough for a technician to test the whole system
of the vehicle. The technician does not have to con-
tinually search for a good ground connection.
iLLuminAtion
For testing in poorly lit or dark areas, the unit provides
illumination for your convenience. The illumination will
automatically be turned on as the technician connects
it to vehicle battery.
imPortAnt
Please read the complete manual before you start to
use this instrument.
Warning: risK oF deAtH
When current is provided to the unit a spark may
occur when the tip contacts the ground or certain circuits.
Therefore please do not operate it around flammable
fluids or gases. Please do not operate it with 110/220 volt
house voltage as it is only for 12 – 24 DC volt systems.
from state to state. OEM will not be responsible for any conse-
quential or incidental damages arising from the breach of this
or any other warranty, whether expressed, implied or statutory.
Some states do not allow the exclusion or limitation of conse-
quential or incidental damages, so the above exclusion may not
apply to you. This warranty gives you specific legal rights, and
you may also have other rights which vary from state to state.
ALWAYS WEAR SAFETY GOGGLES.
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