This mod is STAND-ALONE; it contains the trailer and cargo.

About windblade jobs:
1) windblade cargo maximum route length is 500 miles.
2) windblade cargo exists in only five states: Colorado, Kansas, Oklahoma, Texas, & Wyoming [at Vitas Power]. In Company Browser, search for and select 'windblade' cargo  to see where they exist - do not choose a trailer type; windblade trailer is not classified by SCS (or me); if you pick a trailer type, windblade cargo won't appear.
3) you must => level 15
4) resetting economy may be necessary
5) several rest cycles may be necessary

Notes: 
- Purchase ONLY the normal trailer configuration marked "OWN" ("F7" configuration is included). 
- Use "Adjust Trailer" (F7) to swap between configurations.
- (Tiny garages don't play nicely with the Extended trailer.)

Instructions:
- use/attach your trailer,
- select your cargo in the Cargo Market (Take Job),
- drive to a safe location(*) near the source company; BEFORE taking the job, Adjust Trailer (navigation route will disappear when F7, so remember what you're doing); (you can F7 after you've triggered the cargo icon to view cargo, just don't TakeJob if you want to F7.)
- Take Job ! :)

(*) safe location: a location where sufficient clear space exists behind your truck to spawn your choosen trailer configuration.