How do you replace antenna mast 1996 mitsubishi3000gtspyder?

buy a replacement antenna. undo the nut on the wing that secures the antenna. now turn the stereo on. the antenna will rise. when it gets to the top position it will pull out with no problem. leave the stereo on at this point. insert the white plastic track of the new antenna until you feel it almost grip. now turn the stereo off. the motor will now pull in the white plastic strip. now do the nut up again and job is complete. for any further assistance please visit. www.pajerouk.co.UK