View source for B-MB9



{{Infobox product
| name=B-MB9
| Manufacturer=Train Control Systems
| Type=Motherboard
| SKU=1636
| rDate=July-25
| MSRP=$39.95
| Functions=4
| BulbFuncts=Up to 4 (Selective)
| LEDFuncts=Up to 4 (Selective)
| Protcols=DCC, DC
| VSupplies=DCC or DC 5V-24V
| ISupplies=<3A (Combined)
| IFuncts=<100mA (Each)
| KeepAlive=On-Board
| Scale=HO-Scale
| ProductDimensions=2.28” x 0.69” x 0.23”<br />58mm x 17mm x 6mm
}}

==Technical Information==
The {{PAGENAME}} from TCS is an 4-function 21-pin decoder motherboard with integrated Keep Alive® on-board. The {{PAGENAME}} was designed specifically to fit the Bachmann Three-Truck Shay. Like most motherboard designs from TCS, this motherboard does include on-board Keep Alive®. 

The {{PAGENAME}} has been designed to meet NMRA standards, and is compatible with any NMRA-compliant 21-pin decoder with up to 8 lighting outputs, such as TCS’ WOW121 or EU821 decoders (sold  separately). 
This motherboard can be used with LEDs thanks to on-board resistors. See the [[IB-MB3#Lighting Wiring Instructions|Lighting Wiring Instructions]] section below for detailed instructions. 



==Wiring Diagram==
Shown below is the latest wiring diagram for the {{PAGENAME}}. This diagram depicts the "Revision 1" version of the {{PAGENAME}}, which is the current production version.
[[File:B-MB9 Bottom Rev2.png|alt=B-MP9(2025) Wiring Diagram|none|thumb|400x400px|''Click to Enlarge'']]The wiring diagram above uses colors for inputs, outputs, and other functions as defined in the NMRA standards for [[Support - Lighting#Decoder Wiring Color Code|Color Coded Wires]].

==Lighting Wiring Instructions==

===Wiring Instructions for LED Lights===
Perform these steps below to connect LED lighting to the motherboard:

Step 1: Connect the Anode (+) wire from the headlight(s) to any available “V+” (BLUE) pad.<br />
Step 2: Connect the Cathode (-) wire to the F1 and F2 pads shown in the wiring diagram.<br />

===Wiring Instructions for LED Lights===
Perform these steps to allow bulb support for the headlight and rear light.

Step 1: Solder the two bridges located on the bottom of the motherboard.<br />
Step 2: Wire bulbs to the V+ and FL/RL outputs.<br />

==Previous Revision Information==
''None Available''

[[Category:TCS Products]]
[[Category:TCS Motherboards]]