I liked my remote start so much that I decided to upgrade to a unit with an alarm. Here is the wiring diagram I drew up for my install and some pictures showing the wire locations. The wiring diagram is in schematic form. This unit has a lot of features. It includes remote start, turbo timer, remote entry (with separate driver's door unlock), passive starter disable/anti-grind, and dome light supervision. The alarm includes the usual door supervision and shock sensor options and also has 2 way paging so I will be notified on the remote if something nefarious is going on. To utilize all the features I had to buy 1 momentary switch and 1 relay, everything else was included with the Crimestopper CS2016DP-FM car alarm.
For a basic remote start with keyless entry click here.