This installation is for a HO-Scale Atlas GP39-2 Phase 1 using a TCS WOW121-Diesel Decoder, AK-MB1 Motherboard with built in Keep Alive™
and UNIV-SH1-C WOWSpeaker kit by TCS.

This was performed by our friends from DCC Xpress installations.
They offer high quality WOWSound installations for a flat rate complete with free return shipping!
You can find them at: www.dxinstalls.com


These items are available in the WDK-ATL-3 which was used for this installation.
AK-MB1 Motherboard with Keep Alive™ WOW121-Diesel Decoder UNIV-SH1-C Speaker Kit
Click here for more information on the WDK-ATL-3 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-Scale Atlas GP39-2 Phase 1 prior to installation.

To start off this install, we must first remove the front and rear coupler screws highlighted in red above and their housings.
With that complete, the shell will lift off of the chassis.

With the shell off, we can now remove the factory light board. First remove any wire clips and disconnect the wires from the board.
Once the wires are loose, the factory light board can easily be removed from the chassis.

With the original light board removed, trim, tin or lengthen the wires as necessary.

Attach the AK-MB1 to the same mounts and solder the lights, motor and track pickup wires to the AK-MB1 according to your included wiring diagram.
This engine comes supplied with LED's.

We have found that LED light output is brightest when shinning directly into the end of the light tube, but in some circumstances they may be placed along the length
of the tube as well with satisfactory results. In doing so, white light LED output would be least affected, while non white LED output will be more affected by placement.




Insert the 35mm x 16mm speaker into theUNIV-SH1-C speaker housingmount the assembly up into the shell as seen above.
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.
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.

Solder your speaker wires to the AK-MB1 and plug in your WOW121-Diesel 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

We can now 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.


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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