Oct 17, 2014. Parts Identification & Fitting Diagrams. Fig.21. Trailer. Front. Motor 2 into. Control Unit 1. Thank you for choosing a Purple Line® trailer mover. This has. Read this User Manual carefully before installation and use. Failure to . Using Your Caravan Mover with Quattro® Technology. Before proceeding with installation and starting to use the mover, please read this manual very carefully .