This installation is for a HO Scale Broadway Limited 2-10-4 J-1/T1 using a TCS WOW121 Steam Decoder, B-MB4 Motherboard with built in Keep Alive®
and 30mm WOWSpeaker. The locomotive and tender shown prior to installation.
To begin, we address the tender. To remove the shell, simply lift the shell off, being careful to protect the handrails, etc... when doing so. Here the tender is shown with the shell off.
First, remove the two screws on the original lighting board and remove the wire leads from it. Remove it from the tender. Cut the plugs off of the wire leads.
Next, remove the two screws from the weight shown above and remove the weight from the chassis. Save these screws for the weight re-installation. Remove the two original speakers. These will not be reused.
The tender shown ready for the installation.
Place the 32 mm WOWSound speaker into the rear opening and using a small amount of hot melt glue, secure this speaker into the opening. We have found that with the single speaker and adjoining open port, the resulting sound and delayed sound from the rear of the speaker is amazing.
NOTE: You must be very careful to avoid getting glue on the speaker cone. Glue on the speaker will ultimately cause it to produce no sound and fail.
Using the saved screws, reinstall the original weight and then using double sided foam tape, mount the B-MB4 to the top of the weight as shown. Trim, tin or lengthen the wire leads as needed and using small lengths of TCS 3/32" and 3/64" shrink tubing, insulate these solder leads.
Solder the tender's track, rear LED and new speaker wire leads to the motherboard as shown. At this point, we need to shift our attention to the locomotive and remove it's shell.
To remove the locomotive shell, first, remove the screw highlighted in red above located at the rear of the tender.
Next, remove the second screw in the rear.
Then remove the two screws highlighted above in red underneath the middle of the locomotive.
Finally, slide the front truck aside and remove the final screw highlighted above in red.
With these five screws removed, slide the shell rearward slightly and it will lift from the chassis. This will also release the front interior weight/smoke unit from inside the shell. Set all these screws aside for later use.
The locomotive chassis shown with the shell removed. Set this aside and flip the locomotive shell upside down, disconnecting the plugs from the front decoder board that connect to the front LED and smoke unit. With these plugs disconnected, with your index finger, from inside of the shell, carefully push the front interior weight forwards. It will slide out from the shell interior.
The smoke unit removed with the front LED attached shown above. Unsolder the original LED leads from the pads highlighted above in red. This will release all the wires and connectors related to the original lighting and smoke unit.
Solder new wire leads for the front LED to the original board. Feed these leads back through the shell interior and reinsert this weight by sliding the unit and board back into the locomotive shell. Although in this installation, the smoke unit is no longer supported, leaving this unit in place retains the original look of the locomotive from the exterior.
Cut the two leads shown highlighted in red and splice the new LED wire leads that were routed through the shell onto these clipped leads, being sure to trace the correct positive and negative leads back to the rear board shown below.
Using the board found on the rear of the locomotive as a guide, transfer the wire lead order to the plug on the tender and then to the wires attached to it. Here we identify the pin order using the correct wire color. The two center leads will be unused.
Track (R) = Red
Track (L) = Black
Motor (+) = Orange
Motor (-) = Gray
LED (+) = Blue
LED (-) = White
With the wire /plug order identified, solder the correct tender wire leads to the B-MB4 according to the included wiring diagram.
You can now plug in your WOW121 steam decoder.
Lastly, in order to keep the wires neat and prevent possible shorts, lace the wires into a bundle using lacing cord, which is a wax impregnated string
used for wire bundling and making harnesses. There are many choices of lacing cord available from Digikey www.digikey.com. We use part number 802534B BK032-ND
Now you can close up the locomotive and tender. Be sure to be mindful of wire routing and reassembly of the shell as to not damage or foul the installation. Your Broadway Limited 2-10-4 J-1/T-1 is now WOWSound equipped and ready to roll!
Important Soldering Tip
Please do not use any flux either liquid or paste on the mother board. Over time, the acidic properties of liquid or paste flux will begin eating away at the fiberglass PCB and will damage it. Use only Rosin-core solder or no-clean flux approved for electronics use.
TCS recommends the use of Kester "44" Sn63 Pb37, .015" diameter Rosin-core solder. Kester part number 24-6337-0007.
You can order this solder from the following retailers:
Digikey - PN:KE1110-ND
Techni-Tool - PN:488SO6775
Other solder tips
When stripping wire, only strip a tiny little bit of the insulation. Strip no more then a 1/64 of an inch. When the wire gets tinned with solder, the insulation will shrink back more. Try to not expose any more wire then half the length of the solder pad at most. In no case should solder or exposed wire wire ever be outside the boundary of the the solder pad you are attaching a wire to.
Click here for important information on properly Stripping and Tinning wire