Connect the battery to the speed controller and the throttle. Follow the instructions included with the kit to connect each part. Typically, you’ll only need to plug the connector on the speed controller into the connector on the battery, then repeat the process for the throttle. Be sure not to touch the battery wires together, as this could create a dangerous spark! 
The "Dandy horse", also called Draisienne or Laufmaschine, was the first human means of transport to use only two wheels in tandem and was invented by the German Baron Karl von Drais. It is regarded as the modern bicycle's forerunner; Drais introduced it to the public in Mannheim in summer 1817 and in Paris in 1818. Its rider sat astride a wooden frame supported by two in-line wheels and pushed the vehicle along with his or her feet while steering the front wheel.
There's no question that electric bikes are far better for the environment than petrol-powered car engines. But that doesn't mean they're completely perfect. Making and disposing of batteries can be very polluting. Not only that, but an electric bicycle is still using energy that has to come from somewhere. You may think you're using clean green power, but the electricity you use for getting about might have come from a filthy old, coal-fired power plant or one driven by nuclear energy. (If you're lucky, of course, it might have come from solar panels or a wind turbine!) Electric bikes are nowhere near as environmentally friendly as ordinary push bikes, but nothing is ever perfect—and, as people often say, "the perfect is the enemy of the good." Electric bikes are certainly a step in the right direction. If everyone used them to get about instead of cars, global warming might be less of a problem, and the world would be a far cleaner and healthier place!
Riding position: You also may wish to check out an e-bike’s riding position before investing in it. For short trips, the riding position might not make much difference, but for long journeys, the upright "Dutch" style with pulled-back handlebars is very comfortable – particularly for tall riders. The same goes for mountain bike styles, though these bikes are not often designed to actually go off-road.
Different gears and ranges of gears are appropriate for different people and styles of cycling. Multi-speed bicycles allow gear selection to suit the circumstances: a cyclist could use a high gear when cycling downhill, a medium gear when cycling on a flat road, and a low gear when cycling uphill. In a lower gear every turn of the pedals leads to fewer rotations of the rear wheel. This allows the energy required to move the same distance to be distributed over more pedal turns, reducing fatigue when riding uphill, with a heavy load, or against strong winds. A higher gear allows a cyclist to make fewer pedal turns to maintain a given speed, but with more effort per turn of the pedals.
11. Disputes: THIS SWEEPSTAKES IS GOVERNED BY THE LAWS OF United States AND PA, WITHOUT RESPECT TO CONFLICT OF LAW DOCTRINES. As a condition of participating in this Sweepstakes, participant agrees that any and all disputes which cannot be resolved between the parties, and causes of action arising out of or connected with this Sweepstakes, shall be resolved individually, without resort to any form of class action, exclusively before a court located in PA having jurisdiction. Further, in any such dispute, under no circumstances will participant be permitted to obtain awards for, and hereby waives all rights to claim punitive, incidental, or consequential damages, including reasonable attorneys' fees, other than participant's actual out-of-pocket expenses (i.e. costs associated with entering this Sweepstakes), and participant further waives all rights to have damages multiplied or increased.
These are, unfortunately, small steps forward, however, as the majority of city streets in America aren’t bike-friendly, and new legislation is rarely enforced. Then, if you take a look at the fitness (or lack thereof) of the average American, a connection begins to develop. This connection becomes even stronger when you compare the biking system here with that of a country like Norway, which has devoted hundreds of millions of dollars to its biking infrastructure, building highways dedicated to the mode of transportation. As a result, Norway is one of the most physically active countries in the world, significantly lowering their incidences of heart disease and obesity.
Hmm, I think it depends on the forest. My experience has been that if you have a Class 1 ebike and are riding respectfully, most places allow it. I have a sensitive knee and carry a doctor’s note citing disability laws in Colorado and have never been approached or asked by a ranger or fellow rider about the legality of my bike. That said, I have been using the really quiet and hidden Brose motor and I ride carefully and am friendly with everyone
And let’s not forget the economic advantages of owning an e-bike. The annual cost of running a new family car is, on average, about $9,000 per year. Running an electric bike costs around $400 per year. And while filling a gas tank costs around $30, recharging an electric bike battery costs only about 50 cents. A tank of gas may get you further, but not 60 times further!