
Last Updated: 27 March 2025
Graham Farish Class 411 4CEP DCC Sound Installation
Mistakes may damage your locomotive, controller or other accessories. Use a multimeter to make absolutely sure you have completely isolated the motor from the track before testing. Always use the Programming Track for testing. Our guides are provided for reference only, and you proceed entirely at your own risk. Unsure about something - try our DCC Conversion Service instead.
Buy Graham Farish Class 411 DCC Sound Conversion
This guide shows how to install DCC sound into the Graham Farish Class 411 4CEP models, including:
- Graham Farish Class 411 7105 in BR Green (372-675)
- Graham Farish Class 411 7126 in BR Green (372-677)
- Graham Farish Class 411 7113 in BR Blue & Grey (372-677)
Step 1 - Remove Body
Remove the body by starting at the driving cab door and working your way towards the back.
Step 2 - Fit Speaker
There is space at the non-driving end for a speaker. Unclip the piece of interior trim. Fit the speaker in place, making sure that the speaker does not extend beyond the footprint of the chassis.
Step 3 - Fit Optional Stayalive
Remove the screw in the plastic pillar, then unclip the interior seating section. Remove one of the seats to make space for the stayalive. Solder wires to the stayalive, and add heat shrink tubing over the capacitor legs.
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Step 4 - Fit Decoder
Fit the sound decoder into the socket and solder the speaker wire on.
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Step 5 - Test
Place the model on your programming track and test.
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