I have what may be a basic question and I could probably figure it out with trial and error here or there if time permitted but if one were to crank up a gas powered lawn mower where would you attach the voltmeter to positive and negative in order to ascertain what voltage was available to tap into? Recently I watched a few videos of people who had taken apart a lawn mower and attached a car alternator via a pulley system to the motor which created a generator. Is it possible to merely attach wires to a running lawn mower someplace and attach them to a power inverter in order to generate electricity without dismantling the mower itself so I can mow the lawn again come spring?