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How do I convert my turntable to DCC?

There are some Hornby accessories that may function better under the control of the R8249 locomotive decoder instead of the accessory decoder.  These include the Hornby R070 turntable.  The use of a Locomotive decoder will allow for fine control of the motor speed in these accessories.

Modifying the turntable for DCC operation

Please note that modifying the below accessory requires use of a soldering iron and should only be carried out by an experienced modeller who is competent with making the required modifications.

Please note with any DCC conversion or other modification, this is only a guide and we cannot accept any responsibility for any damage caused.  As with all modifications, these are carried out at the owners risk.


Turntable contact removal
Turntable contact removal

For operation of the Turntable, the contacts at the end of each rail must be carefully removed.  If left in place they will cause a short-circuit.

    • Locate the brass contacts at the end of each rail on the rotating Turntable section.


  • Gently slide the contact out from under the rail.
  • Repeat this process for the end of each rail.



Wiring the turntable

Follow these steps to wire up the turntable:

  • Cut the plug off of the R8249 Locomotive Decoder and strip the RED, BLACK, ORANGE and GREY wires ready for soldering.
  • Cut the plugs off both the BROWN and BLACK wires that protrude from the base of the Turntable and strip them ready for soldering.
  • Solder the ORANGE wire from the decoder to the BROWN wire from the Turntable and wrap the join with insulating tape. Similarly, solder the GREY wire from the decoder to the BLACK wire from the Turntable and wrap the join with insulating tape.
  • It is necessary for the RED and BLACK wires from the decoder to be connected to the track. For ease of use it is recommended that the RED and BLACK wires from the decoder are connected to RED and BLACK wire from the track are joined together using an electrical terminal block.
  • Ensure that all remaining wires from the decoder are individually wrapped with insulating tape to prevent short circuits.

This wiring guide will help you.


Turntable wiring guide
Turntable wiring guide


Please note: You must ensure that any turnouts from the modified turntable are live in order for locomotives to operate.



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