Ijust overhauled the old wiring on my 1976 t140v. at the auto parts store are wire marking tags to help keep it all straight. religously use these and also make a lot of notes.start by untangling the mess in the headlight area and remove it . pay attention to the routing of wires . make lots of notes .if using masking tapeuse green or blue and a permenent markerultra fine tip.if any more help is needed try to email me or cal 580-227-2250 do you have a way to send a picture of the rear brake assyof how yours is mounted?thanks curt