The MC2 decoder with a medium harness is used for a very easy plug n play installation. There is not enough room above the light board of the locomotive for a decoder with out modifying the roof weight but there is plenty of room along the sides of the chassis for the MC2 decoder. Kapton tape was used to hold the decoder and harness in place.
MC2 decoder with medium harness. To order the decoder and harness together the part number is MC2P-MH.