This installation is for a HO-Scale Atlas U30B low nose using a TCS WOW121-Diesel Decoder, IB-MB2 Motherboard with built in Keep Alive™
and WOWSpeaker kit by TCS.

Kit Coming Soon! We are in the process of assembling all the items shown here into a new WOWKit.
Please check back here to see the new WOWKit when it arrives.


Important Soldering Tip:
Please do not use any flux either liquid or paste on the mother board. It will damage it. Use only Rosin core solder approved for electronics use.
We recommend to use only Kester "44" rosin core, SN63PB37, .015" diameter, part number 24-6337-0007.
This can be ordered from Techni-Tool under Techni-Tool part number 488SO157

HO-Scale Atlas U30B low nose prior to installation.


To start off this install, we must first remove the front and rear coupler screws highlighted above and their housings.
With the couplers removed, 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.

The Atlas U30B low nose shown with the shell off.


First remove the front and rear light board screws shown in red above.

Unplug and disconnect the wires from the board. Once the wires are loose, the factory light board can easily be lifted from the chassis.
Shown above with the board removed.

In this installation, it is necessary to remove the original 6 pin JST connector and replace it with the 6 pin connector supplied
in the WOWkit. For the kit connector, wire the front and rear anode wires to the blue and then the front and rear
cathode wires respectively  to the white and yellow on the connector supplied with the kit as shown above.

Using the original screws. mount the IB-MB2 motherboard to the chassis and plug the JST connectors into the appropriate female mounting connectors.

Remove the two screws holding the original speaker enclosure and remove it from the chassis. Drill a 1/8" hole into the speaker housing in a way that it will freely port into the locomotive as highlighted in blue above. We have found that introducing a port of this size greatly enhances the volume and sound quality of this installation. Install the 35mm x 16mm speaker into the original enclosure, securing it with hot glue and screw this assembly to the chassis. 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.
Plug it into the motherboard.

Shown with the speaker in place, all the connections secure and Kapton tape in place to keep loose wires from moving. Now you can plug in the WOW121 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
We use part number 802534B BK032-ND

Now you can close up the locomotive and reinstall the coupler assemblies. Be sure to be mindful of wire routing and reassembly of the shell as to not damage 
or foul the installation. Your UB30 low nose is now WOWSound equipped and ready to roll!

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

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