© 2014 Digitrax, Inc.
www.digitrax.com
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Parts List
1 DN166I2B Mobile Decoder
1 Instruction Sheet
Installation Information
See the Digitrax Decoder Manual for complete decoder test procedures, instal-
lation instructions, programming and technical information. Digitrax manuals
and instructions are updated periodically. Please visit www.digitrax.com for the
latest versions, technical updates and additional locomotive-specific installation
instructions.
CAUTION: Programming and layout track must not exceed
16V when using this decoder.
Installation Instructions
1. Carefully remove the locomo-
tive’s shell from the frame by
inserting two toothpicks under
the unit’s ladders as shown.
2.
Grasp the frame and toothpicks
with one hand and the locomo-
tive’s shell with the other hand
and carefully separate the two.
3.
Once the shell is off, remove the
existing light board by removing
the two screws located on the
diagonal corners of the board
and unsoldering the motor and
light connections.
Note
: It
is important to make sure the
motor and LED are electricaly
isolated from the frame. For full
details visit
www.digitrax.
com/funit
4. Take the new
DN166I2B
decod-
er and feed the motor leads up
through the holes as show in
Figure 4
.
5.
Solder headlight leads and
motor leads to the new decoder
board as shown. The final step is
to secure the decoder with the original screws. Note: the locomotive’s frame
halves may have to be loosened slightly to achieve proper alignment.
CAUTION: When attaching headlight and motor wires, be very careful
that the wires you attach do not come into contact with any other pads
or components on the board where they might create a short circuit.
Figure 1
: Insert
toothpicks as
shown
Toothpicks
inserted under
center of body
Unsolder light and
motor connections
Figure 2
: Unsolder the wires
from the light board.
