1995 cherokee remote start/keyless entry

My uncle is gettin a remote start with keyless entry from target and wants me to install it. i have never installed a remote start or keyless entry. the 1995 cherokee does have power locks and power windows. is it hard to install a remote start on a 95 cherokee for a beginner. i have however installed a stereo in my car which is a saturn so im familiar with electronics setups. the box for the remote start says that is the worlds most simplest install and comes with a video also. 

Craig3708 wrote: Its a pretty basic install, but you will have to do reverse polarity through relays for the power door locks...                 Craig.....

and what size relays should i use?