Eliminate the physical exertion commonly associated with lifting and lowering a trailer when you use a Stromberg Carlson 3500 lb. Electric Tongue Jack. It does the heavy lifting for you, and has lots of other features as well. For example, the trailer tongue electric jack has equalizing bars that are easy to set, so you get better results, and two separate LED night lights that provide both added safety and additional illumination. The leg extends up to 23; and although it is heavy and durable, it's also surprisingly lightweight and easy to store.
Jack Cover, (John Higson Cover, Jr.), American physicist and inventor (born April 6, 1920, New York, N.Y.—died Feb. 7, 2009, Mission Viejo, Calif.), spent most of his career in aerospace but became famous in the mid-1970s for inventing the TASER, a handheld weapon that fires darts attached to insulated wires to deliver debilitating electric shocks at ranges of up to several metres. Cover’s goal was to devise a nonlethal means of stopping violent acts, such as riots and hijackings. Though the TASER was initially classified as a firearm because the darts were propelled by gunpowder, in 1993 Cover used compressed nitrogen to activate the darts; the modification allowed the public to purchase his invention. The TASER name (a registered trademark) was a modified acronym from the title of one of Cover’s favourite childhood books: Tom Swift and His Electric Rifle.
The former, obviously, and through personal experience, is much harder to use than the latter. However, the primary benefit of the manual jack is that it COULD be less prone to breaking since it is a simpler device. The electric trailer jack could fail electrically or mechanically. The electric trailer jack will also require installation or some know-how as far as wiring goes. 
I have used this cover to cover the tow jack on my trailer which has been parked up on the drive of my beach house for the last 12+ months. It has therefore been subjected to a marine type environment which plays havoc with house door fittings etc. The cover has survived intact and is now still in an "as new" condition. I am very pleased with this purchase and highly recommend it. 424779
There are literally dozens of manual trailer jacks available. This is a very simple device that doesn't cost a lot of money. There aren't huge differences between the different available options, so we picked a light duty and a heavy duty manual jack option to give you an idea of what is out there. The manual trailer jacks we chose get good reviews on Amazon and are great choices if you wish to go the manual route.
The RV electric jack cover protects your unit from UV damage and environmental hazards. Universal RV electric jack covers are an excellent solution for protecting the finish and prolonging the original appearance of these systems. Each cover has 1/8″ strong and durable draw rope with a barrel cord lock in the hem for quick easy installation and removal. Recommended for storage only.

While you could possibly run the power from the 7-Way to the jack, it is not ideal and you could overload the circuit. I recommend adding a battery to the trailer and providing a maintenance charge to the battery from the 7-Way. You will connect the 12 volt circuit from the 7-Way trailer connector to the positive battery terminal. The jack will get its power from the trailer battery this way and not from the vehicle 7-Way. Having the wire to provide a maintenance charge will only maintain...
The RV electric jack cover protects your unit from UV damage and environmental hazards. Universal RV electric jack covers are an excellent solution for protecting the finish and prolonging the original appearance of these systems. Each cover has 1/8″ strong and durable draw rope with a barrel cord lock in the hem for quick easy installation and removal. Recommended for storage only.
One pretty awesome solution is the Towing Organizer by GR Innovations. This made in the USA organizational solution attaches around your trailer jack (either manual or electric) and gives you a place to hang two safety chains, an emergency brake cable, and an electrical harness. Making everything neat and organized (and making Marshall a very happy camper).

So every time she has had to hitch up, which is often, raising  and lowering her jack has darn near thrown her back back out. To make matters worse, with an e2 weight distribution hitch she loathes, she has to (usually) RAISE the jack up to get the coupler high enough to clear the ball, LOWER it down onto the ball. Then she has to again RAISE the hitch way up, literally lifting the back of the truck, so she can get her weight distribution bars high enough to install them. Finally, she has to LOWER it back down until the jack foot is all the way up. That's a lot of cranking and it makes Kelly cranky. (Sorry. Couldn't resist.)
The cover has worked great. The reason for only 4 stars is that we took preventative measures when it arrived. Many reviews complained about it leaking. We turned it inside out and sealed all the seams. Once dry, we put a plastic bag on first and then this cover. Using both has made a water/weather proof cover to protect the electronics of our power lift. The plastic on its own is not strong enough, adding this cover made the difference.
×