I’m hoping one of you guru’s might help. I bought a cheap Lionel 6-28839 Alaska GP30 in “kit” form. The original owner said there was a problem with the front motor and truck, so he took a lot apart and cut or broke many wires. I’ve got it mostly back together and repaired the obvious wiring (blue soldered to blue, yellow to yellow, etc). The good news is it runs! All I did was put it back together, so I don’t know what the original guy was doing. It runs forward-reverse, both couplers work, all sounds seem to work. The last problem is that I’ve got two wires, but only one obvious terminal without a wire at the smoke on/off switch. Connecting either wire to that switch does not produce smoke of lights. There isn’t a wiring diagram on Lionel’s site that matches this unit. I’ve also looked at GP35, RS11, and C420 diagrams from about the same time, but none match. Both unconnected wires are black. One comes from what Lionel calls the “AC regulator/diesel code ES2” (part 691ACRGES2 on Lionel’s site if that helps) on the parts break down. The other comes from somewhere under the mother board. Only the front headlight will power on when running forward, and that LED flickers. None of the other LED’s power on. The smoke doesn’t work, and doesn’t power on if either of the two loose wires are connected to the on/off switch. I reeeeeally don’t want to lift that mother board to trace this wire. The rats nest of wires on the cab end of the mother board scares me. Can anyone come up with any ideas? That AC regulator could be bad, but I don’t know how to test it. Even the parts themselves for the lighting don’t match any shown on the Lionel site. This picture may not help, but both loose black wires are towards the top left.
