© 2014 Digitrax, Inc.
www.digitrax.com
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Parts List
1 DN166I1A 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.
Once you’ve positioned the
toothpicks, grasp the frame and
toothpicks with one hand and
the locomotive’s shell with the
other hand and carefully sepa-
rate 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.
The final step in removing the
lightboard is to carefully unsol-
der the two wires leading from
the headlight assembly.
4. Take the new
DN166I1A
de-
coder and place it on top of the
frame. Note proper orientation.
The decoder’s brass motor con-
tacts should fit in the frame slot
as shown.
5.
Solder headlight leads to the
new decoder board as shown If
you were sitting in the cab, the
yellow lead would be on your
left and the green lead would be on your right. 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.
Figure 1
: Insert
toothpicks as shown
Tooth-
picks
inserted
under the
steps
Figure 2:
Grasp toothpicks and gently
remove shell from frame.
Figure 3:
Unscrew, unsolder and remove
standard lightboard
