Installation step: First, turn the radio on, then insert it down the hole, and turning the radio off. The motor should grab onto the new antenna and collapse it right down the hole. Power antenna MAX 6 section, extended length is 39 inches. If your motor is working and the old one isn't broken off inside, the power antenna mast is the best choice. Aftermarket antenna mast make of high quality stainless steel, not easy to rust, waterproof and anti-corrosion. Automotive power rod telescopic is high sensitivity, sturdy enough. For AM/FM radio signal reception. Signal reception is adequate. It can be used in high temperature and low cold environment. Direct replacement for 2001-2007 Toyota Sequoia.