©2008 Digitrax, Inc
www.digitrax.com
3
Installation Notes:
1. Do not exceed the decoder’s 500mA total function output rating.
2. We recommend that the Blue wire, also Common or Lamp
Common, be connected as shown. If you wish to omit the Blue wire in your
installation, consult the Digitrax Decoder Manual for more information.
3. The head lamp should be hooked up using the Blue/+Common wire for
optimal Digitrax transponding operation.
4. To use a function output with an inductive (coil) type load, see the Digitrax
Decoder Manual for more information to avoid damage to the decoder.
5. See the Digitrax Decoder Manual for full details of wiring 12-16V lamps,
1.5V lamps, and LEDs. Lamps that draw more than 80 mA when running
require a 22 ohm 1/4 watt resistor in series with the directional light func-
tion lead to protect the decoder.
6. Some locomotives employ filter capacitors for RFI suppression in the loco-
motive wiring. These may cause problems with Supersonic decoders and
non-decoder analog operation on DCC. This capacitor should be removed
for best operation.
2
24
44
43
3 T
Trraannssm
miitttteerr R
Rdd
T
T
8
85
50
0--8
87
72
2--9
98
89
90
0
PPaannaam
maa C
Ciittyy,, FFLL U
USSA
A 3
32
24
40
04
4
FF
8
85
50
0--8
87
72
2--9
95
55
57
7
w
ww
ww
w..ddiiggiittrraaxx..ccoom
m
EE
ssaalleess@
@ddiiggiittrraaxx..ccoom
m
DZ125
Figure 1.
DZ125 Wiring Diagram
Digitrax
DZ125
Decoder
Warning: to prevent
decoder damage,
be sure the motor
brushes are properly
isolated before
applying power.
