just make sure u disconnect the battery beforehand, and once everything is wired up, double check everything to make sure all is good. if u have to, take a pic of it once its installed BEFORE you put the battery terminals back on and compare the pic with pictures of big 3 setups on here. then of course, put the terminals back on. you can bust it out bro.youll be alright, just take your time if your worried and good luck