The Signaling Solution, Inc.
PO Box 25
West Terre Haute,
IN 47885
Phone:(812) 533-1345
Fax:(708) 570-6140

Installation Procedure

Required tools required

A small soldering iron, no more than 40 watts. A 25-watt iron would be ideal.
A small jeweler’s screwdriver.
A 1 X 6 piece of pine (plywood) about 8-12 inches long.5VDC GCC power supply
Tools required
Prior to installation, you will want to prepare the card edge connector (item 5) and the mounting hardware. We envision that you will mount the board to a flat surface, such as a piece of plywood or a 1x6, attached beneath your bench work. You will find packed in a small bag the following hardware

• Pan-head #4-40 Stainless steel machine screws (2), item 9
• Stainless steel #4 flat washer (4), item 8
• Stainless steel #4 internal tooth lock washer (2), item 7
• Stainless steel #4 hex nut (2), item 6 • Angle brackets (2), item 11.
GCC Assembly and Parts
Item 2: Board activity indicator
Item 3
: Bell volume control R14
Item 4
: Action and Detection Header JP1
Item 5
: Card Edge Connector
Item 6
: Stainless steel #4 hex nut (2)
Item 7
: Stainless steel #4 internal tooth lock washer (2)
Item 8:
Stainless steel #4 flat washer (4)
Item 9:
Pan-head #4-40 Stainless steel machine screws (2)
Item 11:
Angle brackets (2)
  • Add or remove the three jumpers provided to select the scene action and type of train control system.

  • The volume control is provided so you can adjust the level to any desired loudness. Use a small jeweler’s screwdriver to change the setting. Turning clockwise increases the volume; turning counter-clockwise decreases the volume.

  • The board activity indicator is a LED which blinks about 2 times per second whenever power is applied to the GCC. If the LED is out completely, the power supply is either not connected, or the 5-volt supply on the board is shorted to ground by a connection to pin 16. If it is on, but not flashing, then the processor is not functioning. Turn off the power to the board by unplugging the AC adapter provided for about 10 seconds. Then plug it back in. If the LED still does not blink, the board may not be working.
Physical Installation of the GCC Board

  • The first step is to decide upon a location to mount the GCC board. This will probably be near the grade crossing scene.

Suggestion: We suggest that you mount the GCC on a flat surface, such as a 1x6 piece of pine about 8-12 inches long. Then, mount the pine to a bench leg or some other accessible location beneath your layout.

  • Make sure that there is adequate room and light to work. Try to make it as convenient as possible.
  • Mounting hardware is provided with the GCC to install the board as shown in Figure 3-5 and Figure 3 -6.
  • Mount the connector as shown in the Figure 3-5 GCC Board Installation.
  • Complete the necessary wiring and plug in the GCC Board with the components on the circuit board facing you. This completes the installation.
  • Figure 3-5 shows an optional barrier strip used to strain relief the four wires required to connect the GCC to the train running circuits. If the length of these wires is fairly short, less than about 5 or 6 feet, and your trains don’t draw much current, less than an amp or so, you can probably wire the track circuits using 20 or 22 gauge wire. The connector pins can handle such wires. Make sure you install a strain relief of some kind near where the barrier strip is shown. This simple precaution will prevent damage to the connector if someone accidentally pulls on the wires. In fact, it is always good practice to provide a strain relief for wiring going to connectors. The strain reliefs are very cheap; connectors are very expensive and time-consuming to replace.
  • Most wiring to train tracks will be heavier and longer. Because the pins on the connector are limited to 20-gauge wire, you will need a convenient place to convert from the heavy track wires to short, small gauge wires that go to the connector. A barrier strip like this is a good, professional way to do it. A four-circuit barrier strip is available from many sources. One good example would be a product by Cinch-Jones called the model 4-140 Barrier Strip. It’s available from Digikey (1-800-344-4539) for less than $2.00. You may not need this, or you may have other methods you prefer, but you are limited to 20-gauge wires to the connector.


For more details you can check the GCC Owner's Manual.
The Signaling Solution, Inc. PO Box 25, West Terre Haute, IN 47885