* Add 1 Part 766c190 Light Gray Electric, Wire 12V / 4.5V with two 2-prong connectors, 190 Studs Long
* Delete 2 Part 766c01 Light Gray Electric, Connector, 2-Way Male Squared Narrow Long with Center Post
* Delete 1 Part x466 Light Gray Electric, Wire 12V / 4.5V with two Leads, unspecified length
Comments from Submitter:
I have this set. It is actually the same as 7863-1.