This installation is for a HO Scale Athearn SD70M-2 using a TCS WOW121 Decoder, GEN-MB1 motherboard with Keep Aliveā„¢
and a 28mm speaker by TCS.

These items are available in the WDK-ATH-1 which was used for this installation.
GEN-MB1 Motherboard with Keep Alive™ WOW121-Diesel Decoder 28mm Speaker Kit
Click here for more information on the WDK-ATH-1 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 SD70M-2 with its shell on prior to installation.

      

We do not have a full installation shown with steps for this locomotive, but it is here shown with the shell off, the GEN-MB1 in, everything soldered in place
and the 28mm speaker inserted into the frame speaker port, secured with a rim of hot glue.

Shown ready to go with the WOW121 decoder in place.

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

At this point, all that is needed is to reattached the shell in reverse order, insert and screw the coupler boxes in place into the Athearn SD70M-2 locomotive
and it is 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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