We just installed the jack and the directions were okay, a few more diagrams would have been helpful. When I had watched videos on others installing the unit I only found one showing how to install the electrical to the battery and this was my worry and this one did not show the red wire fuse so we had no idea it would be in the box and this was a worry because we were doing it ourselves. I finally found a video that showed that you cut the red fuse wire in half and install the enclosed connectors, but it would have been very helpful if it was in the directions. So when you cut the red wire in half you attach the Ring Terminal to one end and the black wire using the double connector to the other. Sorry I don't know the exact name for the parts. Clap each of these and then we used electrical tape to secure. Then you attach the Ring Terminal to the positive post on the battery. Also you need to sand the paint at each holes to get a good metal to metal contact for grounding. One more thing the directions don't tell you to install the star washers prong sides down, watched videos for this too, it digs into the metal for grounding. These little items are very important because if grounding and wiring isn't don't properly it is dangerous. Now that we were done the jack seemed to work fine. Only used it once so far, but so good. If the company did a video from beginning to end showing and explaining the whole process they would get more sales because one of the reasons I choose this one is an individual did a video but it wasn't complete but better then the others and he made it sound easy to install.

Unit operates smoothly and quiety, both using electric and hand crank. It has a toggle switch for lowering or raising, another toggle switch for side LED light. Slightly overextended the unit beyond the taped warning, as I was parked on an uneven surface. The unit reached the end, and then just stopped working. However, i was able to override the electric with the hand crank, and cranked it back up to the safe zone of the unit. Turned out that it blew the 30 AMP fuse and no damage was incurred to the actual electric portion of the unit. When I installed the lift, I did not like the old cylinder glass type fuse, so I used a properly gauged outdoor sealed 30 amp blade type fuse instead. Replacing the fuse and I was back in business. I did locate some safety tape and replaced the damaged overextending tape to make it more noticeable. Be cautious, as the manual states you can possibly do damage by overextending beyond the safe zone of this device. Overextending is when you lower the hitch end too much to accommodate a site where the back of the trailer is lower than the front. Also, during installation, I added a chain to the top of the bubble level, hand crank knob so that if it should come loose, I won't lose it. I used a fishing line swivel connector for part of this chain. This knob costs about $25 for replacement.