Hi I have a MTH F-3a MT 2052LP PS1 early version wires soldered to bottom of board. Bottom board is defective, so I replaced bottom board with a latter version w/female sockets.My problem is I can not find any wiring schematics f/PS1. Every thing I have just show the 4 female socket upgrade nothing else. Engine has a PCB in front with 5 lights 4 wires on bottom of this board red , blue, white & green I'm not sure where they go. The same problem in the rear of this engine is a harness for a dummy A unit . The wires are red, black , blue & white. I hate to assume the black is ground, red is power. Assumption can get me a blown out board. Can anyone with a schematic for this engine or knowledge of where these wires go. I'd appreciate the help.
Original Post
