my name is adam and my ride is a 86 RX-7 gxl. i have a couple of questions if anyone is willing to help. i bought an after market stereo for my ipod. i connected has power. but ever since i hooked it up. the battery light has come on and then it seems like its having a little trouble idling. it will rest at about 800 and then drop to about 400 and go back up and down. until i give it some gas for a bit and then it will rest at 800 no problems. any ideas?