9 Pin Jst to 21 Pin Adapter Harness for HO Scale Decoders and RailPro Modules
- Length 5" (125 mm)
- 9-Pin JST Plug on One End
- NEM21 21-Pin Socket on One End
- Use to adapt decoders with 9-Pin JST Header in 21-Pin equipped locomotives
- Also works great to adapt Ring Engineering RailPro Modules to 21-Pin locos.