Owner manual

10
OPERATING INSTRUCTIONS
This section contains information on the usage of the #9008 Series Mobile Uni-
versal Trailer Tester. (MUTT
®
)
FUNCTIONAL DESCRIPTIONS
The Mobile Universal Trailer Tester (MUTT
®
) is a eet maintenance and a diag-
nostic aid for trailer electrical operations wired to North American style 7 round pin
conguration.
The following describes the Testing Panel (g. 3).
A. AIR CONTROL SWITCH
S elect between Emergency, Remote and Service Side air control.
Left: REMOTE
Center: EMERGENCY
Right: SERVICE
B. POWER SOURCE SWITCH
Select between Internal Battery, External Power, or Power Off.
Center: OFF (battery charge in this position only)
Up: Installed battery ON
Down: External power ON (power supply is an optional accessory)
C. 12V DC BATTERY TRICKLE CHARGE INPUT
Use for connection of trickle charger to battery (charger not included)
Allows oat charge to be kept on battery when unit is not in use.