We recently purchased a 2004 Tiburon GT Coupe for our teenage son. It did need repairs such as spark plugs, bushings/end links (suspension), brake pads etc, but overall runs well. Our son purchased a blue tooth stereo and we did replace the stock radio with that. Everything was great for a few weeks and then we were hit with the erratic turn signal issues, battery getting drained when he didn't realize the blinker light randomly came on and stayed on etc. We attempted to desolder/solder to replace the turn signal relay, but sadly that didn't go so well. We have ordered a used BCM with the exact parts number which should be here in a few days. Can anyone advice what steps we need to take once we install the replacement BCM? I have read so many different things as far as needing to have reprogramming completed etc. Any advice is appreciated. My son loves this car and we would love to get it all situated for him.