Craftsman 486.245333 Owner's Manual page 7

STEP 9: (SEE FIGURE 9 AND 10)
• Attach the sprayer to the tractor hitch and connect
the wiring to the tractor battery. The red wire must be
connected to the positive post on the battery or to
the "HOT" connection on a tractor switch or ammeter.
The brown wire may be grounded or connected to
the negative battery post.
IMPORTANT: Connect to 12 volt batteries only!
IN LINE SWITCH QUICK COUPLER
\
BROWN BROWN -
FIGURE 9
BATTERY
NEVER allow negative pin on plug to come
in contact with positive "Hot" post on battery.
Fire or explosion may result.
PLUG
NEGATIVE PIN
POSITIVE
+ "HOT"
POST
NEGATIVE
POST
12 VOLT TRACTOR BATTERY
FIGURE 10