This installation is for a HO-Scale Kato EMD SD90-43MAC using a TCS WOW121-Diesel Decoder, AK-MB1 Motherboard with built in Keep Alive®
and UNIV-SH1-C WOWSpeaker kit.
|These items are available in the WDK-KAT-1 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-KAT-1 and the rest of the WOWDiesel Kits line.|
HO Kato EMD SD90-43MAC shown 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 the couplers removed, while gently squeezing along each side of the shell, gently lift the inner shell off of the frame.
Take care to release the handrails as you lift off the shell so they don't break.
The Kato EMD SD90-43MAC shown with the shell off.
Remove the wires and the two screws highlighted above in red and remove the lighting board from the chassis. Save these screws for reinstallation.
With the original lighting board removed, trim, tin or lengthen the wires as necessary.
To make a new motor connection, first trim off the metal motor pickup tabs as shown above left. Create a connection point to each of these, solder the new leads,
then insulate these with shrink tube insulation. We used small lengths of TCS 3/32" and 3/64" shrink tubing.
Attach the AK-MB1 to the frame with the saved screws and solder the motor and track pickup wires according to the included wiring diagram.
Next, carefully remove the two existing LED's from each end of the original lighting board.
Take the original front LED and using a small pair of pliers, bend the ends as shown to fit onto the front of the AK-MB1. This will become the front ditch lights.
Solder it in place to pad #1 as shown above, facing into the end of the light tube. Install the rear LED in a similar manner as shown.
In this installation, we decided to add a new LED for the headlght to allow separate functional operation of the ditch lights. To do so, clip the length of the original
front LED headlight tube as shown above left and then using a small dab of hot melt glue, place the new LED onto it, insulating the leads with
shrink tubing as shown above right. We used TCS part #1288 Sunny White 3mm LED for this. Solder these leads to the AK-MB1 according to the included wiring diagram.
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.
With the 35mm X 16mm WOWSound speaker inserted into the UNIV-SH1-C enclosure, using double sided foam tape, securely mount this assembly into the front top of the shell
as shown above. Solder the speaker wire leads to the AK-MB1 according to the included wiring diagram.
Shown with all the components installed correctly. In order to separate the front headlight output visually from the ditch lights and prevent light spillover,
we placed a small piece of black electrical tape into the front roof of the shell to isolate this light.
You can now plug in your WOW121 decoder.
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 Kato EMD SD90-43MAC is now WOWSound equipped and ready to roll!
Click here for important information on properly Stripping and Tinning wire