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Parts List
1 SDH166D Function Decoder with SoundFX
1 Instruction Sheet
1 10 Pin Sound Harness - 8 Ω 16 x 26 x 9 mm box speaker and 330uF cap
1 9 Pin Digitrax easy connect Track, Motor, and Function Harness
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
Figure 1: SDH166D Decoder Connections
For most reliable operation
Digitrax recommends soldering
the SDXH166D connections
SDXH166D: 9 Pin
Track, Motor and Func-
tion Harness
showing 10 Pin Sound Harness with 8 Ohm 16 x 26 x 9mm box
SDH166D
speaker and 330uF capacitor
1.
On the 9 Pin Track, Motor and Function Harness solder the Red and Black
track leads to the locomotive track power connections. Next solder the
Orange and Gray motor leads to the isolated motor connections. Motor
connections must be isolated from the track connections. Note that to be
able to read back Sound FX CVs either a motor load must be connected to the
Orange and Gray leads or a combination of function loads of at least 60mA at
12volts must be connected to the function leads.
© 2013 Digitrax, Inc.
®
10 Pin Sound Harness
— 2 —
www.digitrax.com
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