Description
A brand new 8-pin to 21-pin adaptor, allowing you to use an 8-pin decoder (including DCC sound) in a locomotive with a 21-pin male header plug. It has been designed by and manufactured for Strathpeffer Junction.
Special feature: Two pads for speaker wires are also provided, making it perfect for DCC sound installations. If you have speakers already soldered to the model's PCB, just solder the decoder's speaker wires direct to the pads on the adaptor - no need for any other re-wiring!
The adaptor is compatible with all common brands of decoder, including ESU (LokPilot and LokSound), Zimo, Gaugemaster, Digitrax, Hornby, Bachmann and LaisDcc.
Dimensions: 17mm x 17mm x 7mm (approx.)
Please note that this adaptor requires ~10mm clearance between the model's PCB and body. Some older Bachmann Class 37 and 47 models, and others, may not have sufficient clearance. Fitting in such models may therefore be very tight or not possible.
Aux Output/Function 1 & 2 Wiring
By default, most 8-pin decoders provide a single auxiliary function output via a green wire soldered to the plug. Some decoders may also have an additional function output via a trailing purple/violet wire (and, in the case of some Zimo and ESU decoders, sometimes more besides).
Out of the box, this adaptor will link the green wire to the equivalent pin on the 21-pin chassis. This will be suitable for the vast majority of use case scenarios. However, optional solder pads are provided which you to switch the green output (numbered 'A' in the image below) between function 1/aux/output 3 (default - numbered 'B') or function 2/aux/output 4 (numbered 'C'). This is easily done be breaking a small copper link (marked with *) and soldering a new link.
Alternatively, you could solder any additional purple/violet aux output wire from the decoder solder pad 'C', meaning two aux/output functions can be used to control lights etc. on the model. Instructions are featured in the image below and are also available to download.
Note: Do not bridge both sets of pads at the same time or connect more than one decoder output to any one pad, as this may lead to shorts or overload/destroy the decoder.
Postage
We are happy to combine postage for multiple orders and most listings should do this automatically. If postage doesn't automatically combine, please drop us a message before you pay and we'll sort out a revised invoice. If you've already paid, drop us a line and we can refund the extra.