Yeah, unless you really know what you're doing it could get a bit hairy... Especially when you crack open the box and see the spiderweb of wires in there that comes with a good alarm (sensors, power, siren, lock/unlock, starter kill, dome light actavation, parking light activation, and more). Its not really HARD, per-say, but if you make one mistake you could deepfry your electrical system, your new alarm, or both. If you REALLY want to, just take your time and make double sure that you are tapping/cutting the right wires. I've done it several times and am pretty confident now (that doesn't mean I like doing it), everyones gotta start somewhere. Good luck!