Locomotive Decoders

Locomotives on DCC layouts require a decoder to be fitted to control the motor direction and speed. Additional functions are available on most decoders, usually function 0 being used for directional lighting. DCC Ready locomotives are fitted with a plug-in socket for a decoder, check which type is needed for your locomotive, usually this is shown on the end of the box and operators leaflet. Locomotives without a socket can be fitted with decoders by direct wiring or by fitting a socket on a harness. Reference to Peco decoder installation Shows You How 20 booklet is recommended for guidance.
This booklet provides an illustrated guide to the fitting of DCC decoders to a range of different OO locomotives, covering the different chassis and motor designs and space constraints encountered. Popular models from Lima, Hornby and Bachmann are used to illustrate the fitting of decoders to both new design models and older models with no design provision for DCC. Some are surprisingly easy!

This booklet is highly recommended as a workbench how-to guide.
Fit decoders to older models with confidence!
£1.00
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Gaugemaster Omni Direct Plug Decoder 8 Pin DCC29
An excellent direct plug-in 8-pin decoder.
Length 15mm, Width 12mm, Depth 10mm
  • Number of Functions: 4
  • Number of Pins: 8
  • Current Rating: 1 amp / 1.5 amp peak
  • Address Range: 1 to 9999
  • Reset Value: CV8 to 8

Follow the link for a full list of CV values for the Omni decoder range.

Omni Decoder CV Values.

£21.95
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Small decoder with 6 pin connection on a short flylead.
The 6 pin connection is used in N gauge and many smaller OO gauge locomotive models.
£25.99
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A small-size 4-function DCC locomotive decoder delivering up to 1 amp peak motor current, 0.5 amps continuous and four 100mA function outputs. The small size makes this decoder a good choice for smaller locomotives where the standard-size decoders are awkward to accomodate.
We have found that the Hornby decoders do not always survive soldering, use of a harness (eg Bachmann 36-564) is suggested for hard-wired installations.
8-pin harness connection.
Supports extended addressing and back-EMF feedback motor control.
Decoder measures 17mm x 10mm x 3.mm
£20.99
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The Dapol Imperium decoder is a small size 21 pin 6 function MTC decoder with 1amp rating, 2amp peak and 100mA function output.
Decoder measures 15mm across the connector, 17mm length. 10 years warranty against failure in normal use.
£24.32
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Hornby Sapphire DCC Digital Locomotive Decoder R8245
A high specification decoder with a wide range of configuration options the sapphire has a 21-pin socket connection and is supplied with a wire harness to an 8-pin plug. Decoder measures 23 x 16.5 x 6.5mm.

Supports 1 Amp continuous current with 1.5 Amp stall. low speed "gear" for shunting operations. Size: 23mm x 16.5mm x 6.5mm. Set amounts of "water" and "fuel" can be stored in the Sapphire providing real time fuel consumption. Burn rates can be selected.
£39.99
MRP £42.99
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E-Z Command 21-Pin Decoder Blanking Plate 36-058
Pack of 10 21-pin DCC decoder mounting blanking plates for setting locomotives to DC only operation.
£10.95
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Bachmann 21-Pin DCC Decoder with Back EMF and 4 Function Outputs 36-557
Bachmann 36-557 provides a basic technology decoder with the 21-pin socket type connection, ready to fit onto the 21 pin connectors. These are becoming more widely used, especially in OO diesel locomotives from Bachmann and Dapol. The decoder has one blank hole (the missing 22nd pin), ensuring correct orientation every time. Usually the decoder will fit flat just above the main control board, no wires to be tucked away during as the body is refitted!
This decoder provides a 1 amp power output with configurable high-frequency pulse-width modulation back-EMF motor control for smooth running and configurable speed curves. Shunting speed fucntionality allows the maximum speed to be halved for accurate speed control during slow running and shunting. Four function controls are available with a maximum 350mA combined output.
Decoder measures 25mm long, 15.5mm wide with socket at one end.
£23.95
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Bachmann Wiring Harness with NEM651 Socket for 6-Pin DCC Decoder Pack of 3 36-562
Ideal for fitting decoders to older locomotives not equiped with sockets without the risk of accidental damage to the decoder during soldering.
This wiring harness has fittings to connect a NEM651 6-pin decoder, commonly used with N gauge models. Many of these decoders have a power rating easily able to drive OO model locomotives and ths small size makes these decoders a good choice for small engines.
£15.95
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Bachmann DCC Decoder Adapter 6-Pin Decoder Socket with 8-Pin Decoder Plug Pack of 3 36-563
A useful adapter from Bachmann, providing the option to fit a 6-pin decoder to a model with an 8-pin socket.
This can be useful on models with restricted space for the decoder, as on many steam locomotives, providing�the option of fitting a small footprint 6-pin decoder, designed to fit inside the body of an N gauge model.
£17.95
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Bachmann Wiring Harness with Socket for 8-Pin DCC Decoder 36-564
Ideal for fitting decoder sockets to older locomotives not equiped with a socket without the risk of accidentally blowing the decoder during soldering.
This wiring harness has fittings to connect an 8-pin decoder.
£8.95
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Bachmann 4 Function 8 Pin 0.9 Amp Locomotive Decoder with RailComPlus 36-566
Bachmann 36-566 0.9 Amp 4 Function 8 Pin DCC Decoder featuring RailComPlus
Bachmanns 36-566 decoder is an ESU-based decoder offering advanced and highly configurable back-EMF motor control functionality and RailComPlus communications.
Maximum motor output is limited to 900mA continuous, plenty for all modern OO model locomotives. Four function control lines are available, one as usual being set up for control of directional lighting. Function ouputs can deliver up to 500mA, with a maximum 250mA per output.
Length 26mm, Width 15mm, Height 6mm. Wire length 80mm. 8 pin plug.
£18.95
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Bachmann Next18 Locomotive DCC Decoder 36-567
Miniature NMRA Next18 connection 4 function DCC decoder produced for Bachmann by Zimo of Austria.
Decoder delivers 0.7A motor current, wiht a total current peak capability of 1.5 amps. Features 4 function outputs with 4 logic level outputs. RailCom supported.
Measures 15 x 9.5 x 2.8mm
£21.95
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SILVER SERIES
Lenz Silver Direct HO Loco Decoder 2 Function 10330
A direct plug in version of the 8-pin Silver decoder, the DCC plug is actually incorporated into the decoder circuit board. This decoder mounts directly on the locomotive DCC socket, provided sufficient space is available directly over the socket for the decoder. The decoder should be able to be accomodated in many diesel locomotive bodyshells and in steam locomotives with decoder sockets in the tender.

Motor output 1A, 1.8A peak, 5A stall. Size : Length 18mm x Width 14mm x Height 3.5mm. Mounting plug is set centrally across the decoder, requires approx 10mm clearance each side of the socket centreline.

£33.95
MRP £35.85
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Train Control Systems DP5 Board Mounted Decoder DP5
A very simple to install decoder, you plug the actual decoder board into the 8-pin DCC decoder socket!
This board provides 5 function outputs through direct socket connections and solder pads. Ideal for locomotives with extra accessories or custom wiring to allow head and tail lights to be separately controlled.
Rated at 1.3amps continuous with 2 amps peak for motor drive there are five function outputs available. Two functions can provide 250ma, the remaining three outputs are 100ma. some connections needing to be made using solder pads on the decoder board.
Board measures 0.845in/21.5mm length, 0.680in/17.3mm width and 0.165in/6mm height.
£34.50
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Train Control Systems 21-pin 6 Function BEMF Decoder EU621
This full featured BEMF, 6-function decoder is designed for HO-Scale locomotives equipped with a 21-pin connector, as fitted on many new OO diesel locomotive models. The availaibility of 6 function controls provides control over the extra lighting functions fitted to recent models, from switchable tail lamps to cab interior lighting.
Suggested decoder for Murphy Models class 201 locomotives which use 5 function controls.
Included is TCS auto-adjusting BEMF for outstanding slow speed performance and hassle free set up. Also includes Quiet Drive for super quiet engine performance.
Motor output : 1Amp continuous, 2Amps peak
Function outputs : 6 functions at 100mA.
Dimensions:  .797” x .614” x .185”  or  20.24mm x 15.58mm x 4.73mm
£33.95
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Train Control Systems OO/HO 8 Function 21 Pin Locomotive Decoder EU821
This full featured BEMF, 8-function decoder is designed specifically to meet the needs of HO-Scale modelers who are converting their HO-Scale locomotives equipped with a MTC 21-pin inline socket to DCC. We have included our next generation BEMF for outstanding slow speed performance, quiet drive for super quiet engine performance, and auto adjusting motor control for hassle free set-up.
NOTE:
The EU821 is compatible with the MTC 21-Pin and NMRA 21-Pin Standards.
Dimensions:
.797” x .614” x .198” or 20.24mm x 15.58mm x 5mm
£37.95
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Train Control Systems 6 Pin 2 Function Decoder EUN651
This full featured 2 function BEMF decoder is designed for N-Scale locomotives equipped with a six pin inline socket. Included is our auto-adjusting BEMF for outstanding slow speed performance and hassle free set up. Also includes Quiet Drive for super quiet engine performance.
£33.95
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Train Control Systems MC6 Micro Decoder "X Series" MC6
1A continuous 2A peak motor output. Six 100mA function outputs. Board measures 18mmx10mmx4mm height
Designed to fit N gauge locomotives this decoder supplies enough power for an average OO/HO locomotive and still features six function outputs! Ideal for small diesel locomotives with lighting circuits, this decoder will fit restricted spaces without losing any weight. Fitted with a miniature 7-pin harness connector and wiring harness.
£25.85
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Train Control Systems Long Harness for MC Series Decoder 7" MC-LH
A 7-inch long harness with plugs to connect a MC series decoder with a standard NMRA 8-pin socket. This allows you to select the a length of wiring harness best suited to each model.
£4.99
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Bachmann Plux22 decoder with 1.2A continuous 2.5A peak motor power rating, 9 function outputs and 2 servo outputs.
£34.95
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Train Control Systems 1.5 Volt Regulator Board VR1.5-H
A 1.5-volt volttage regulator add-on for use with many TCS DCC decoders to permit existing 1.5-volt lighting circuits to be retained. Max input voltage 13v. Output 1.5v, 120ma.
£8.50
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DCC adapter plate with a socket for 8 pin decoders and connector 'plug' for 21 pin connection.
This allow 8 pin decoders (eg. Hornby TTS sound decoder) to be connected to locomotives with 21 pin decoder 'sockets'. Additional solder pads are provided to allow for up to 6 function channels.
£4.50
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New Imperium decoder with 8 function control outputs, switchable between logic and non-logic.

imperium decoders are compatible with NMRA and MOROP DCC standards. RailCom is not supported.
£25.82
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Dapols Imperium 2 decoder is the Next18 connection version of the Imperium series of small size 6 function MTC decoders offering a 1amp rating, 2amp peak and 100mA function output.
Decoder size to be confirmed. The 21 pin version measures 15mm across the connector, 17mm length. 10 years warranty against failure in normal use.

£24.32
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Bachmann 6-Pin Right-Angle DCC Locomotive Decoder 2 Functions 36-556RA
Bachmanns 36-556RA decoder is a Soundtraxx product fitted with a 6-pin plug-in connector mounted at right angles to the decoder board and projecting at one end. This allows the chassis designers a much wider choice of mounting locations, for example the decoder can be fitted vertically inside the cab of a steam locomotive.

Based on the high quality and highly capable Soundtraxx MC1 decoder a wide range of user configurable CVs allow the decoder to be tuned and matched to most model railway locomotive motors. A continuous rating of 1 amp is available, making the decoder suitable for N, OO/HO and even small O gauge locomotives. Two function outputs are available with a 100mA maximum load on each.

Supports 14, 28 and 128 speed steps with back EMF regulation and 15.6kHz PWM speed control, short and long (extended) addressing, advanced consist addressing (for double-heading and multiple units) , adjustable acceleration/deceleration rates. The decoder has 15 pre-set speed curves, allowing fine control speed ranges to be adjusted and supports user-defined speed curves with 28 reference points.
£17.95

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Bachmann 6 Pin DCC Locomotive Decoder with Back EMF featuring RailCom 36-568
£29.95

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(Product Ref 100274)
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Antics can supply and instal decoders to new DCC Ready OO gauge locomotives! For just £15.00 we can fit a decoder, leaving only final identity programming to be done. Add the DCC Ready OO gauge locomotive of choice to the basket, then add a decoder installation to the order, either select a decoder or request us to supply a suitable decoder (use the other instructions box of the checkout screen).
We will deliver the DCC locomotive, which must be supplied by Antics, with a plug equipped decoder fitted and tested. Allow a few extra days for delivery.
We cannot fit decoders to non-DCC Ready locomotives or N gauge models at this time.
Terms and Conditions Apply. Service normally available to web customers and at some shops. Please ask staff in store.
£15.00
Available to buy.
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Train Control Systems T1 DCC Decoder with Lead T1is a  two function decoder with 9-pin plug and wiring harness for locomotives not fitted with DCC sockets.

Measures 26 x 16 x 4mm
£24.95

Must be ordered - delivery as soon as possible.
(Product Ref 51673)
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Gaugemaster 6 Pin N Gauge Plug-In Locomotive DCC Decoder DCC23
Most suited to N Gauge locomotives. Key features of this standard decoder include smooth operation, 14/28 speed steps, plug and play, transponder id-equipped, all mode programming, decoder reset CV, motor isolation protection, advanced consisting, 2 and 4 digit addressing and DCC compatability.
This decoder is rated at 1 amp (2 amp peak) with 2 functions at 0.5 amps and measures 10.6 x 8.7 x 2.86mm.
£26.95

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(Product Ref 73285)
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Gaugemaster Omni 21 & 8 Pin 4 Function Locomotive Decoder DCC27
A really versatile 4 function, 1amp (1.8amp max) decoder for use with locomotives that have 8 Pin or 21 Pin sockets.
Length 22mm, Width 16mm, Depth 5mm. 21 pin connector integral, plug-in 8 pin connector harness length 75mm.
  • Number of Functions: 4
  • Number of Pins: 21 (8 Pin Harness)
  • Current Rating: 1amp / 1.8 Peak
  • Address Range: 1 to 9999

Omni Decoder CV Values.

£20.95

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(Product Ref 90391)
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Wiring harnesses allow decoder sockets to be fitted to models without built-in sockets. This allows the necessary soldered connections to be made before an expensive and damage-sensative decoder is attached. The 200mm length harness also allows the wiring to be arranged to reach a convenient place for the decoder to be situated inside the model.
£13.95

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(Product Ref 100744)
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DCC Concepts Zen 218 4 Function Decoder with Stay Alive

The Dcc Concepts Zen 218 decoder is a versatile decoder which  provides both 21 and 8 pin connections and includes a separate stay alive unit. Due to its size will fit in most OO/HO scale locomotives.
£22.95

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(Product Ref 103032)
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DCC Concepts Zen N68 2 Function Decoder with Stay Alive

Like the larger Zen decoders the N68 features very smooth motor drive characteristics which allow for slow speed running even inside N scale locomotives along with a separate stay alive unit.
A 6 pin to 8 pin connection lead is supplied making this decoder ideal for small OO locos with limited decoder space.

£22.95

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(Product Ref 103033)
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£26.95

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GOLD SERIES
Lenz Gold Mini 0.5/0.8A Loco Decoder 2 Function with 6 wires 10410
Fitted with 6 wires.
The Digital plus Gold Mini locomotive decoder is suitable for all DC locomotives with current draw of 0.5 amp or less.
Motor output 0.5amp continuous, 0.8amp max, 2amp stall. Size: L 11mm x W 9mm x H2.8mm
£42.95

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(Product Ref 51784)
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£190.00
MRP £199.95

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(Product Ref 96134)
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DCC Concepts Zen Black 4 Function 3 Amp Decoder with Stayalive for O and G scale model locomotives

£69.95

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(Product Ref 96485)
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£18.95

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Have a question? Contact us
Locomotives on DCC layouts require a decoder to be fitted to control the motor direction and speed. Additional functions are available on most decoders, usually function 0 being used for directional lighting.
DCC Ready locomotives are fitted with a plug-in socket for a decoder, check which type is needed for your locomotive, usually this is shown on the end of the box and operators leaflet.

Sockets for 8 pin decoders were commonly fitted to OO and HO gauge models. Heljan and Hornby models still currently use this socket.
For N gauge a smaller 6-pin socket was designed, along with a small-sized decoder. Bachmann Graham Farish and Dapol N gauge models have 6-pin decoder sockets. Recently Bachmann have designed small OO locomtoives (eg the BR 03 shunter) with sockets for 6 pin decoders.
21-pin connectors are increasingly common in OO models by Bachmann and Dapol

Locomotives without a socket can be fitted with decoders or fitted with a socket by re-wiring the locomotive and soldering the decoder wires in the circuit. Reference to the Peco Shows You How booklet is recommended for guidance.

Sound decoders have their own section - click to transfer.