6
SPECIFICATIONS
• Input: 12V DC Battery (Use Battery Compartment)
• Output: 10A @ 12V DC
• Overload Protection: Automatic Resetting (Internal) Breaker
• Connection Type: 7 Round Pin
• Control Type: Manual Rotary Switch
• Materials: ABS
• Weight: 2 lbs. (Without the Battery)
• Packaged Dimensions: 12.25”(L) x 5.25”(W) x 7.25”(H)
BATTERY REQUIREMENTS
• Battery Voltage: 12V DC
• Battery Protection: 10 Amp Auto-Resetting Fuse
• Maximum Output to Trailer: 10 Amps
AUTO-RESETTING FUSE
• The thermally activated, internal auto-resetting fuse requires a 30-second cool-down
cycle. After this cycle, the illuminated power switch signifi es that the unit is ready to test.
QUICK START-UP GUIDE
SELECT A BATTERY
• The best battery to use is the YUASA YTX14 (12 Ah) or similar motorcycle type battery
with top mounted posts. (Sealed lead-acid batteries only.)
• The battery must be 12 volts DC.
• Maximum battery dimensions: 6”(L) x 4”(W) x 5.75”(H)
• Be sure to properly connect the +/- leads to the correct posts on the battery.
• Once the battery is installed, testing can begin.
TAKING CARE OF YOUR BATTERY
NOTE: Every day, a battery naturally loses its charge, little by little. Batteries are tempera-
mental and can be damaged easily. Using a battery very little and then recharging it will
short cycle the battery and hurt its overall life and output. Additionally, over-discharging
it (exceeding 80% total discharge) and then undercharging will permanently damage the
battery as well. It is not good to leave batteries in cold or hot weather. For every degree
above or below room temperature (72º F), a battery loses
amp hours. Also, it is not good
to allow batteries to sit for weeks at a time without using or charging.
• To get the most life out of your battery, it is important to discharge about 30% to 50%
of its total output, then provide a full recharge.
• A 500mA battery charger has been provided with your purchase. Be sure to disconnect
the battery charger once it is fully charged. For any questions, please call 888-786-7899.
NOTE: DO NOT LEAVE THE CHARGER PLUGGED INTO A WALL OUTLET WHEN NOT
IN USE.
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WARNING: NEVER OPERATE TESTER WITH BATTERY VOLTAGE LESS THAN 11.5V.
OPERATING ELECTRONIC DEVICES ON LOW VOLTAGE MAY SHORTEN LIFE OF
DEVICE AND CAUSE DAMAGE TO INTERNAL COMPONENTS. IDEAL BATTERY
VOLTAGE IS 12.0V DC TO 12.5V DC.
SET-UP
• Use the supplied battery charger or charger input no greater than 3 amps to fully charge
the internal battery of the tester. It may take up to 12 hours to charge a fully drained
battery.
• Place the tester on a fl at, level surface.
• Chock trailer wheels to avoid rolling.
The Ranger MUTT
®
allows the testing of trailer electrical systems without the need
for the tow vehicle. When used properly, the Ranger MUTT
®
can save hours spent
troubleshooting electrical issues.
CHECK 7-WAY PIN CONNECTORS: Before operating the Ranger MUTT
®
, be sure the
7-way socket on the front of the Ranger MUTT
®
and cable coming from the trailer are in
good condition and the pins are spread to the proper width to ensure good connections.
MAINTAIN 7-WAY PIN CONNECTORS: Dielectric grease should be used on all connec-
tions to avoid corrosion. If a bad connection exists at the terminal junction, you may get
an erroneous reading and the MUTT
®
will not work properly. Make sure that you have a
solid connection in the 7-way socket.
FUNCTIONAL DESCRIPTIONS
The Ranger MUTT
®
is a diagnostic tool for trailers wired to North American style 7-way
round pin confi gurations.
Fig. 2 - Control and Information Panel
1. Control Knob: Activates one selected
circuit at a time.
2. Power Switch: Illuminates when ad-
equate power source is available and
power switch is on.
HEAVY
Max. Load: 10A/12V DC ONLY
Internal 10A Auto Resetting Fuse
30 Second Cool Down Cycle
Illuminated switch indicates power being sent to trailer.
Switch light will go out if breaker is tripped.
Warning! Do not connect any adapters or accessories
to 12V DC socket unless internal battery has been installed.
POWER
ILLUMINATED
ON
OFF
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