Instructions to Build a Wind Generator From a GM Alternator With a little work, you can convert any GM alternator into an electric generating wind turbine. Doing so can help you cut down on your electricity bill or allow you to use a turbine in a remote location to power a water pump or an RV. Even if you don't have a GM alternator you can buy one for as cheap as $26 online, as of early 2010. Homemade Wind Generator Made With A GM 1-Wire Alternator We also discovered that there are modifications that can be made to a Delco alternator to make it suitable for a small wind generator. One, the stock Delco alternator stator wiring needs to be replaced with a stator that has more turns of smaller gauge wire and high powered neodymium magnets replace the standard magnets to give more power output.