Installation, Exhaust cam connections – SoundTraxx Tsunami Installation User Manual

Page 29

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Tsunami Installation Guide

Page 26

Tsunami Installation Guide

Page 26

4. To wire the Function 6 output, connect one end of the bulb to the

decoder’s GREEN wire. Wire the other bulb lead to the decoder’s BLUE

wire.

Any outputs not used can be left disconnected, but you should cut off and

insulate the ends of the wires so they do not come in contact with locomotive

or locomotive wiring.

Using LEDs

Tsunami decoders may be used with LEDs, which also require a resistor to

be wired in series, typically about 680-ohms, 1/4W. Unlike lightbulbs, LEDs

are sensitive to polarity. The minus (-) cathode end of the LED (the shorter of

the two leads) is connected to the function output and the plus (+) anode end

is connected to the decoder’s BLUE (function common) wire.

1. To wire the Headlight, connect the cathode end of the LED to the one

lead of the resistor. Wire the other resistor lead to the decoder’s WHITE

wire. Wire the anode LED lead to the decoder’s BLUE wire.

2. To wire the Backup light, connect the cathode end of the LED to one lead

of the resistor. Wire the other resistor lead to the decoder’s YELLOW

wire. Wire the anode LED lead to the decoder’s BLUE wire.

If you use Functions 5 and 6 for lighting effects:

3. To wire the Function 5 output, connect the cathode end of the LED to

one lead of the resistor. Wire the other resistor lead to the decoder’s

BROWN wire. Wire the anode LED lead to the decoder’s BLUE wire.

4. To wire the Function 6 output, connect the cathode end of the LED to

one lead of the resistor. Wire the other resistor lead to the decoder’s

GREEN. Wire the anode LED lead to the decoder’s BLUE wire.

Figure 23 - Wiring the Decoder for LED Lamps

Exhaust Cam Connections

(steam only)

Connect the TAN wire from the 3-pin Speaker/Cam harness of the DSD to

the exhaust cam wiper switch. The decoder is factory-programmed to operate

using the Auto-Exhaust feature. If you wish to use an exhaust cam, you must

enable the cam-synchronized exhaust by setting CV 112 to 128.

Installation

FUNCTION COMMON

BLUE

Forward

Lamp

Reverse

Lamp

680 ohm

Resistor

WHITE

YELLOW

Cathode (-)

680 ohm

Resistor

Cathode (-)

LEDS

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