Welcome log in

Installation Guide

Installation Guide for Main Aspect Signal

Each Absolute Aspects signal comes with its own Printed Circuit Board (PCB). It features all necessary resistors, diodes and a connector so that the associated signal can be easily fitted without the need of soldering wires above your head whilst being under the baseboard. Some signals may have bespoke copper boards due to the amount of features on the signal and so will have a length of ribbon wire to a smaller copper circuit board which has the connector attached.

Absolute Aspects' signals work off 12v DC and are wired up common negative. Please check with your DCC suppliers if you are using DCC to control your signals to see if their systems are compatible with our signals.

Absolute Aspects' signals are not designed for children under the age of 16. All circuit boards should be well ventilated to prevent heat build-up.

Step by step guide to installing your Absolute Aspects' signals:

1) If not detached already, carefully hold the signal by the base of the post and pull it out of the PCB connector. Be sure not to twist the signal as it comes out, as this may bend or break the connecting pins.

2) Place the signal on top of the baseboard in the position you want it in and draw around the connector directly onto your baseboard.

3) Drill several small holes within the area you’ve just drawn and then file out the edges to make the connector fit into the baseboard.

4) Looking at the two parts of the connector, you will see that there is a notch on one of the sides or a paint mark; this will usually be at the front of the signal. These must be aligned for the signal to work properly and to prevent damage to the electronics. Taking this into account, mount the PCB to the underneath of the layout by using small wood screws through the designated holes.

5) Plug in the signal to the circuit board from the top and make any adjustments to the screws to ensure the signal is standing perfectly straight whilst being fully connected.

6) Ensure your 12v DC supply is switched off before continuing.

7) For your ease of installation and safety, we have fitted all circuit boards with screw terminals. For DC users, connect a wire to the Common Negative (CN) terminal and link this to the negative side of your 12v DC supply (DCC users please consult your decoder manuals for wiring instructions).

8) Connect the 12v DC positive supply to the control method you intend to use for your signals; this could be anything from a simple on/on switch for a two aspect signal to a rotary switch for more complicated signals.

9) Connect the terminals relative to your signal to the switch/switches via their individually labelled screw terminals:

CN or NEG – Common Negative

R – Red

Y – Yellow

DY – Double Yellow

G – Green Route Indicators

PL – Position Light (This will also energise the ‘Red’ aspect)

Route Indicators will have the requested letters or numbers written beside the terminal.

Junction Indicator Positions will be linked to a function number starting from 1 and will be in numerical order EG: Position 4 & 5 Junction Indicators will be to function 1 and function 2 in order.

10) Once your signal is wired up and you have tested its operation, you can glue it in place and ballast accordingly.

Enjoy your new signals and please send any photos you take to info@absoluteaspects.com as we would love to see them on your layout.

Installation Guide for Ground Position Signals (GPS)

1. Drill a 4mm wide hole in your baseboard in the desired location.

2. Carefully insert your signal, wires first, from the top of the baseboard.

3. Connect the black wire to the negative 12v DC supply.*

4. Connect the positive side of the 12v DC supply to an on/on switch.

5. Then connect the red or yellow wire to the switch.*

This will display a:

- red/red (on) indication for a Modern Style GPS

- red/white (on) indication for an Original Style GPS

- yellow/white (on) indication for a yellow GPS

6. Connect the white wire to the opposite terminal of the switch. This will display a white/white (off) indication.

7. Once you are happy with the position of your signal, glue the signal in place with an appropriate adhesive.

*All GPSs come fitted with a resistor; you can also attach GPSs to a compatible DCC signal decoder (Please see supplier’s instructions for installation).

Enjoy your new signals and please send any photos you take to info@absoluteaspects.com as we would love to see them on your layout.


Real signals, made in miniature.


Your shopping basket is empty!