Ive just ordered The Dennison ice link plus device,so am trying to syke myself up to fit it when it arrive"s im a bit of a novice in Ice. So i have a couple of questions: 1) Is it paramount i disconnect the battery? 2) If so will the service countdown reset it self? Ps i guess i will have to re-enter the security code for the head unit and reset the preset stations? 3) Is there anything else i will have to look out for when diconnecting the battery? sorry it ran over into 3 questions. Thanks inadvance for any help and advice.