Proto-Sound 3.0 Installation Manual Brandname: M.T.H. Category: Toy Total Pages: 40 Table of contents TableofContents2ContentsOfTheKit3RequiredTools6Four-MotoredLocomotives7InspectionReview8Proto-Sound30Upgrade9Chassis10ContD12ContD13CouplerInstallation15InstallingTheVolumePot20ConnectingLightsLeds24ContD26