need trailor diagram

Basscat, I have a 91 P2 with the original trailor. Its a single axle and Im thinking I need to replace all of the surge brake assembly parts. Recently I had to replace a set of wheel bearings and found out that all Brake shoes and working brake parts (that dont work now anyway) are in need of a full replacement. Its just been a long time since the trailor parts have been maintained that they all seem to be junk. Is there a diagram that you could send me with part numbers and assembly of all working brake parts so I could start replacing them? Otherwise I am going to do completely away with the braking parts and weld the swiveling hitch to a fixed position. I just thought the brakes could come in handy at some point.