Came with no instructions! National Auto Tools had the best price for this lift online. This thing is heavy, took me an a buddy 4 hrs to install.
Shipped bolted to braces at each end, large bolts hold the runways, small ones hold the four posts. Make sure you place braces underneath before unbolting or risk crushing some toes.
Runway with piston and cables underneath (super heavy one) is the right side of the lift (passenger side of the vehicle when driving on to it) the lip goes towards the inside, the hole for the hydraulic will be on the outside where the vehicle passenger rear tire would be.
You will build the posts and crossbars first, then attach the runways. I put a strap around each end of the runway and used a hi-lift jeep jack to lift each end up by hooking the strap onto the jack tongue, once up I put jack stands under the runway ends higher then the crossbar, then pushed the post/crossbar into place and bolted it.
Once the lift is together you will need to lay on the floor and use your foot to push-extend the piston to give the cables the length needed for the install (about 5ft)
The cables are self explanatory, just have to feed a few through some framing.
Instructions would have been nice for the locking mechanism install, but the small linkage mounts to the bottom of the bracket, long one to the top of it. Make sure you do. It over tighten the handle pivot point of the mechanism will bind and not engage properly.