Hi,
I have a similar problem and can't find the wiring diagram. I get the gantry to move, but I can't get the rocket to fire after I replaced the ribbon wiring. I don't want to damage the unit, so any help you can get me would be greatful.
Thanks
Jim Lepere
Try Olsen’s Toy Train Library, If you don’t have access to a Service Manual. They have the majority of accessories listed for Prewar & Postwar available. This site is a good one to “Bookmark”, for those of you without a Service Manua.
Here is a wiring diagram for the 175
Larry
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