last site update 29thDec2020

view our privacy policy

Basket

Home
About YouChoos
Shop
YouChoos Sounds on Zimo
BLANK Sound Decoders
Speakers
Standard Decoders
Function Decoders
Accessory Decoders
Cables & Interconnect
DCC Systems, Testers & Programmers
Feedback Modules
Connectors
Stay-Alive
Electronics Components
Working Lamps
Lighting
LEDs
Tools
Glues & Adhesives
PSU & Power
Wire
Figures
Seuthe Smoke
Ready-To-Run Models
Gift Vouchers
Install Guides
Quick Helps
Technical Resources
CT Documentation
Build your own sounds for CT
How to Order
Fitting Services
What's New?
Customer Feedback
Useful Links
Contact
Install Guides by Loco Class General - Fitting Decoders General - Fitting Kit CT Elektronic Reference
YouChoos Resouces
Fitting DCC to 21-Pin (MTC) DCC-Ready model

The 21-pin 'MTC' adapter is a more recent standard compared to the 8-pin connector, but is generally much simpler because you don't normally have any wires from the decoder, so it can be plugged into your loco's 21-pin adapter quickly and very neatly.

21-pin adapters are common in diesel OO locos, or in some steam locos where the decoder socket is located in the tender.

The pins are arranged in 2 rows of 11 pins each, where one of the rows is missing a pin in one corner. This indicates which way around the decoder needs to be plugged in - you cannot get it wrong because it wont physically plug in if you get it wrong!

Be careful to insert the decoder 'square' onto the pins, as they can bend easily if you do it at an angle.

Here is Bachmann's beautiful Wainwright 'C' showing the 21-pin socket in the tender. To fit DCC Sound in this loco is a piece of cake - 3 screws to take the top of the tender, unplug the DCC blanking plate, solder on the speaker to the speaker pads provided in the loco, stick the speaker in place (a nice chunky bass-reflex 20x40x10mm 8ohm speaker), slot on the sound decoder, and that's it!

Disclaimer

Please note that these guides are provided as useful resources for you, as-is. YouChoos cannot be held responsible for errors in the information, or for any damage caused to your models or equipment if you choose to follow any of the steps detailed here.


A bit of YouChoos poster art for your enjoyment!