07-28-2009, 10:00 PM
There sure are lot of components on the PC board. Way too many for just a light board. The 8 pin plug has 8 tabs on it, 4 on each side. Are there not wires attached to each of the 8 tabs? There should be one tab without a wire ,#3. As #3 wire is not used in most cases. Lift off the 8 pin plug and check to see where the wires are connected. Does the loco run on DCC? If so, can't you read back the decoder ID and version? Not sure but it sure looks like a decoder to me.