This installation is for a HO-Scale Bachmann SD45 Early Frame using a TCS WOW121 Decoder, AS-MB2 NC Motherboard, a KA3 Keep Alive™
and UNIV-SH1-C WOWSpeaker kit.
|These items are available in the WDK-BAC-3 which was used for this installation.|
|AS-MB2-NC Motherboard||WOW121-Diesel Decoder||UNIV-SH1-C Speaker Kit||KA3 Keep-Alive™|
|Click here for more information on the WDK-BAC-3 and the rest of the WOWDiesel Kits line.|
HO-Scale Bachmann EMD SD45 Early Frame shown prior to installation.
To start off this install, we must first remove the front and rear coupler screws highlighted above in red and their housings.
Remove the two screws located underneath the fuel tank as highlighted above in red and with them the fuel tank.
While gently pulling outwards at each end and along each side of the frame, lift the shell off of the frame.
Take care to release the handrails as you lift off the shell so they don't break.
Shown with the shell off. As the frame takes up almost all of the shell, this unit will need to be milled out to accept the WOWKit.
To do this, you will need to separate the frame in two and remove the truck assemblies as well as the motor. Remove the four screws highlighted
above in red and their components to separate the frame and remove the original lighting board.
Shown here from the opposite side, you can see the unit with half of the frame removed. Use great care to keep the component pieces and note their
locations for reinstallation. In this locomotive, the top of the frame will be milled down to fit the WOWKit. The modification required is extensive and should be
only done by someone with a good knowledge base and skill set in milling.
Above, the locomotive is shown reassembled after milling and with new motor leads soldered and insulated to the motor with shrink tube.
As this locomotive was originally electrically split in two halves with the track pick ups running through the two parts of the frame, to install the
WOWKit, you will need to install two new solder posts using a tap and die, on the top of the frame as shown below highlighted in red. On this installation
we used a 3/64" drill bit, a #80 tap and electrical lugs to create the solder points
The two new solder connections posts installed on the top of the frame shown above.
Using double sided foam tape, mount the AS-MB2 NC to the top of the frame and solder the motor and track lead wires to it
according to the included wiring diagram.
Using double sided foam tape, mount the KA3 Keep Alive™ to the frame and solder the leads to the AS-MB2 NC.
Insert the 35mm X 16mm speaker into the UNIV-SH1-C enclosure and mount this to the frame using double sided foam tape.
Solder these wire leads to the motherboard. This unit has fans that are loose in their frame and can cause vibration and can degrade
the sound. To prevent this vibration, we found it necessary to secure the fan blades to the housing with a small dab of glue.
As the original locomotive came with bulbs, we installed TCS part #1417 sunny white LEDs to the shell. Above is the detailed photographs showing
the front (Left) and rear (right) installations using a small dab of hot melt glue. Solder the wire leads to the AS-MB2 NC according to the included wiring diagram.
You can now plug in the WOW121 diesel decoder.
Click here for important information on properly Stripping and Tinning wire