TERION UM20-100111B, Installation Manual, Page: 39 / 78

key off , probe the “battery” fuse bus. Look for a lug or a spare fuse circuit with
12 VDC on it. This will be used for non-switched connection (red wire).
c. c. Identify a switched power source. Switch the VOM to the DC volts position.
With the ignition key on , probe the “switched” fuse bus to find a lug or a spare
fuse circuit with 12 VDC on it. Turn the ignition key off and verify the power
source turns off when the key is turned off. This will be used for the switched
connection (yellow wire).
Note: When cutting the wires in the next step, there are two
things to keep in mind:
•
The ground wire may require additional length. Since many tractors
are equipped with insulated fuse boxes mounted on plastic, the ground
location may be farther away from the fuse box. Split the ground
(black) wire away from red and yellow wires before cutting the red
and yellow wires to length.
•
Be sure to leave enough extra wire for a service loop.
3. Cut the wires to length.
4. Secure the power cable. Attach the power cable to the tractor with tie wraps to
prevent the power cable from being pulled out.
Note: Due to the numerous types of terminals, an assortment of terminal ends
is included in the installation kit. Use only the approved parts contained in the
installation kit to connect to the terminal lugs and/or the fuse panel.
5. Install an in-line fuse to the yellow ( switched ) line. Split the power cable ribbon into
separate lines. Use a butt connector to crimp the yellow wire to the mini in-line fuse
holder. Crimp a terminal connector to the other end of the in-line fuse holder. Use
the proper terminal (i.e., ring or blade) for the type of connection required. Attach the
terminal to the switched power source. Insert a mini ATO 2-amp fuse into the fuse
holder.
6. Install an in-line fuse to the red ( continuous hot ) line. Use a butt connector to crimp
the red wire to the in-line fuse holder. Crimp a terminal connector to the other end of
the in-line fuse holder. Use the proper terminal (i.e., ring or blade) for the type of
connection required. Attach the terminal to the non-switched circuit. Insert an ATO
7.5-amp fuse into the fuse holder.
7. Connect the ground wire to ground. Crimp a ring terminal connector to the end of the
black wire and connect it to the ground source found in step 2a.
7-3
Mobile Messaging System Installation Manual June 15, 2001
UM20-100111B Terion, Inc.