I recently purchased a 1981 GL1100 Goldwing Interstate. I would like to change out the factory AM/FM cassette stereo with a new Sony Xplode AM/FM CD player I have laying around. I am electronically inclined as I am a retired engineer. Is it as simple as say changing out a car stereo and and using a DVM to indentify speaker wires, power, accessory power etc. and making my own adapter harness or does Honda make it somehow tricky on a 1981 ? I see people selling a variety of stock harnesses, factory Clarion decks and amplifiers ? I really do not see the need for a amplifier using a more modern CD deck the Sony Xplode CD player mentioned above. I have seen several posts where changing out the stereo on a Goldwing is not a simple task so was just curious what the issues are ? Or does it get more complex on the later model Wings ? Remember mine is a 1981 Interstate with factory speakers and deck in the fairing. I would also like to add a pair of rear speakers. I just bought the bike a week ago but have been very sick and have not had time to pull the stereo and look at the harness. I Can't wait to get better and work on the Wing ! I have all winter as I live in Iowa. Thanks for your help in advance!