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
This installation also uses a TCS 6-pin Mini Connector to connect the locomotive to the tender.
NOTE: The speakers in the tender must be wired in SERIES to avoid damage to the decoder's audio amplifier. DO NOT wire the speaker in PARALLEL. If you are not familiar with what that means, CLICK HERE to read an article all about it.
Note that MTH locomotives make use of a "Common Cathode" electrical design, whereas DCC decoders are "Common Anode." This means ALL of the LED lighting functions on the model will be in the opposite polarity from what a decoder needs. You either need to cut certain traces on the PCB's, or reverse the physical LED's in the model in order for the lights to function. Alternatively, you can remove all of the original lighting boards and replace them with your own LED's.
Please do not use any flux either liquid or paste on the mother board. Over time, the acidic properties of liquid or paste flux will begin eating away at the fiberglass PCB and will damage it. Use only Rosin-core solder or no-clean flux approved for electronics use.
TCS recommends the use of Kester "44" Sn63 Pb37, .015" diameter Rosin-core solder. Kester part number 24-6337-0007.
When stripping wire, only strip a tiny little bit of the insulation. Strip no more than a 1/32 of an inch. When the wire gets tinned with solder, the insulation will shrink back more. Try to not expose any more wire than 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