All Minn Kota electrical items are tested first by the manufacturer and a second time before leaving our warehouse. Since they are tested twice, the chance of the items being inoperative is very unlikely. In the event that you have any questions regarding the installation of your item, please contact us before doing so. We do not accept returns on electrical items. If for some reason you do not need the part you’ve ordered, it must be returned as unused, uninstalled in the original package with all of the original contents and will be subject to restocking fees. We have been a authorized Minn Kota warranty center for over 20 years and can help with any questions you may have !