HMRC Panel A Connections (2026-03-02).pdf
HMRC Panel B Numbering and Wire Colors (2022-11-30).pdf
HMRC Panel B Connections (2026-03-02).pdf
HMRC Panel C Numbering and Wire Colors (2022-12-26).pdf
HMRC Panel C Connections (2026-03-02).pdf
HMRC Panel D Numbering and Wire Colors (2022-12-26).pdf
HMRC Panel D Connections (2026-03-02).pdf
HMRC Panel E Numbering and Wire Colors (2022-12-30).pdf
HMRC Panel E Connections (2026-03-02).pdf
HMRC Panel J Numbering and Wire Colors (2025-10-05).pdf
HMRC Panel J Connections (2026-03-02).pdf
HMRC Panel K Numbering and Wire Colors (2023-11-03).pdf
HMRC Panel K Connections (2026-03-01).pdf
HMRC Panel L Numbering and Wire Colors (2023-08-28).pdf
HMRC Panel L Connections (2026-03-02).pdf
Power Related
HMRC Power Scheme.pdf (2010-01-25)HMRC Occupancy Detector Connections.pdf (2010-01-26)
HMRC Temporary Power Feeds (2025-04-12).pdf
HMRC Power Feeds (2025-04-12).pdf
Turnout Related
HMRC Switch Machine Connections.pdf (2011-07-26)HMRC Switch Machine Decoder Connections (2022-11-26).pdf
HMRC Tortoise Information (2022-08-08).pdf
HMRC Turnout Wiring RH (2022-11-30).pdf
HMRC Turnout Wiring LH (2022-11-29).pdf
Equipment Manuals
Bachmann SD70AC
Quick Start Guide (pdf)SD70ACe Configuration Varible Defaults (pdf)
SD70ACe Parts Diagram (pdf)
Erie SD70ACe Photo
Circuitron Tortoise
Tortoise Instruction SheetESU LokSound
ESU LokSound ManualNCE PowerCab
PowerCab ManualNCE Switch-It
Switch-It User Manual rev C (2007-03-15)Switch-It User Manual rev C (2009-07-27)
Power Shield X
PSX-4 User ManualQuantum Decoder
Reference Manual for QSI Quantum 3, 2, and 1NMRA DCC Reference Manual for QSI Quantum HO Equipped Locomotives
DC Analog Reference Manual for QSI Quantum HO Equipped Locomotives
Walthers RS27
RS27 Diesel Operations ManualMisc
DCC Shortcuts Card
DCC Shortcuts Card (original)DCC Shortcuts Card (v1.2)
Last updated: March 3, 2026
Email: hmrc@hmrc.org