Athearn SD70MAC Decoder Installation featuring the GEN-MB1 Motherboard with Keep-Alive™, WOW121-Diesel Decoder, and UNIV-SH1-O Speaker Kit.
|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.|
First, remove the coupler box screws and the coupler boxes from both ends of the locomotive.
With the couplers removed the shell should lift right off the chassis.
Remove the original lighting board from the chassis and remove the wires from the board tabs.
Clip the motherboard onto the motor just like the original lighting board.
Next, wire the GEN-MB1 according to the wiring diagram in the motherboard manual. This mother board has a 1.5volt power supply to power all the original 1.5v bulbs that come with the Athearn locomotive. It can be configured for LED operation as well, the mother board has built in current limit resistors for LED use. Consult the wiring diagram for LED use.
All the original 1.5volt bulbs supplied with the Athearn loco were used. The "FL" solder pad is the forward 1.5v solder pad for the front lights. The "RL" solder pad is the reverse 1.5v solder pad for the reverse lights. The ditch light bulbs are connected to the solder pads marked "1", "2". The solder pad marked "1.5V" is the common power source for the bulbs.
Next, glue the 35mm x 16mm WOWSpeaker into the UNIV-SH1-O speaker housing. Mount the housing face down on the frame over the rear truck, and solder the wires to the motherboard.
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.
Finally, plug in the WOW121-Diesel decoder and replace the shell and coupler boxes.
Your WOWSound equipped engine is now ready to run!