1992 Cadillac Deville Lights Dimming

I just had an after market alarm installed on my car a few days ago an I just noticed it tonight when I was driving an had my brights on an would turn them on an off the lights would dim/flicker an also when I hit the brakes my head lights would dim/ flicker. Also I installed a chip earlier today too an it was suppose to help give the car more horsepower an better mpg. But after I started driving it after I installed the chip when I would be stopped for about 20 secs at a stop light an try to go the car would idle really low an cut off, then I took the chip out. Could the lights be cause from the little blue lights they installed with the alarm an that is draining the battery? Anoone have any ideas?