This installation is for HO-Scale Athearn F3A including a TCS WOW121-Diesel Decoder, GEN-MB1 Motherboard with Keep Alive™ ,
with UNIV-SH1-C WOWSpeaker kit by TCS.

These items are available in the WDK-ATH-3 which was used for this installation.
GEN-MB1 Motherboard with Keep Alive™ WOW121-Diesel Decoder UNIV-SH1-C Speaker Kit
Click here for more information on the WDK-ATH-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

 


The Athearn F7A shown with the shell on.



Start by removing the front coupler screw and coupler box.
Next, spread the shell and lift it off of the engine.

Athearn F-Unit Note:
Athearn F-Units (F2, F3, F7, and F9) are available with sound pre-installed/sound-ready with a circle milled into the top of the rear of the frame for a speaker.

If you have the sound-ready frame (visible here in the Athearn F9A) use the WDK-ATH-9 WOWkit.

If you have the non-sound ready version (shown here in the Athearn F2A) use the WDK-ATH-3 WOWkit.


With the shell off, remove the wiring from the original lighting board and the lighting board from the engine.


Shown with the lighting board removed.


Next, install the GEN-MB1, insert the 35mm x 16mm speaker in its housing and mount the housing between the frame, securing it with hot melt glue.
Solder the wire leads to the motherboard.

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.


You can install the 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

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 Athearn F3A 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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