This installation is for a HO Scale Atlas EMD MP-15DC using a TCS WOW121-Diesel Decoder, AK-MB1 Motherboard with built in Keep Alive™
and UNIV-SH4-C WOWSpeaker by TCS.
These items are available in the WDK-ATL-2 which was used for this installation.
AK-MB1 Motherboard with Keep Alive™ WOW121-Diesel Decoder UNIV-SH4-C Speaker Kit
Click here for more information on the WDK-ATL-2 and the rest of the WOWDiesel Kits line.

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

http://www.techni-tool.com

HO-ScaleAtlas EMD MP-15DC 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.

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.

SHELL OFF PHOTO

The (train) shown with the shell off. (Unplug/ remove) the wires from the original lighting board and remove it from the chassis.

LIGHTINGBOARD REMOVED PHOTO

With the original lighting board removed, trim and tin, or lengthen the wires as neccessary.

MOTHERBOARD INSTALL AND WIRED PHOTO

Attach the (motherboard) to the and solder the motor and track pickup wires according to your included wiring diagram.

KA4 INSTALLATION if needed

SPEAKER INSTALLATION PHOTO

If your speaker enclosure installation covers the portholes on the enclosure, we recommend adding new port hole(s) similar to the original porting. Be sure that the new portholes are the same size and amount of the original and are vented freely into the locomotive We have found introducing a port of the correct size greatly increases the volume and sound quality of the installation. Too much or too little porting decreases the sound quality.

It is important to use this plug as it greatly increases the volume and sound quality.


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.

LIGHTING INSTALLATION PHOTO

We have found that LED’s do not have to be placed on the end of the light tube, but can be placed anywhere against the light tube with equally good results.

Use this statement for current RTR board ONLY: When attaching the wires to the pads, it is not necessary to insert the wires through the holes. We recommend attaching the wires flat on top of the solder pads. 

LACING PHOTO

You can now plug in your 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 www.digikey.com
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 (train) 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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