There is allot of knowledge here. Don't be afraid to ask. No question is a dumb question, we've all been there. As for a manual Sunlines didn't come with one. Rather a note book filed with component manuals. Trailer companies only make the shell and fill it with components from other manufactures. By the way what model is your trailer.
Top of page is a Files tab and look under Sunline Brochures go to 2001 file and download and see info on your model
Jim and DW
2001 T-2553 Sunline Solaris
2006 GMC Sierra Duramax 2500HD 4X4
Firestone Transforce AT tires
Reese Dual Cam Sway Control