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And the fact that it's all wire connections, I found them remarkably easy to convert to DCC, although over time, the solder joints on the trucks would tend to let go after a period of time as the swivel action of the trucks eventually breaks the wire.
The paint was thick and the details weren't up to a Kato, but the price wasn't either!
I wonder about those truck solder joints breaking. Everybody with those engines probably experienced that at one time or another. I wonder if a short length of heat shrink tubing over the joint would prevent that. All it needs is something to keep the wire from flexing right there at the solder joint. (Why didn't I think to try this back in 1995 when it would have done me some good!)
Teenage Ed learned how to soldering reattaching those damn truck wires to my fleet of LL stuff from that era. Those things, BL2s, an SD9 and those F-Whatevers.
Since the DCC era, manufacturers have gone back to the flexing wires soldered to pivotting trucks. In fact, I had to send a Centipede back to BLI as it had come undone in shipping. It will always remain one of the minor mysteries of N scale to me why the manufacturers have not gone to the LL plastic frame Es and PAs model of construction. There, you have the live trucks that contact bronze strips, but, the electric is passed from the bronze strips to the motor through wires. Thus, you have the isolated motor that the DCC requires, You simply undo the wires on one end or the other (or snip in the middle and splice in new wires, if you must)and wire in your decoder.