viper 160xv in 95 ford contour

Here is a link to the 160XV install guide : https://www.the12volt.com/installbay/file.asp?ID=498

Here is a link to the 12Volt wiring guide : https://www.the12volt.com/installbay/alarmdetail/813.html

Here is a link to Bulldog Security for their wiring guide : http://www.bulldogsecurity.com/bdnew/vehiclewiringdiagrams.asp

Here is a link to AudioVox for their wiring guide : http://techservices.audiovox.com/Login.aspx    Sign up is free.

Here is a link to the DEI site for their wiring guide :  http://www.readyremote.com/main.asp

It appears that they didn't start installing a transponder immobilizer until 1998, so you should be fine without a bypass module.

Compare the wiring guides and make up a crib sheet.  Use that as guide to locate and verify ( with a DMM ) all the wires needed for the 160XV system.  Solder all connections and use a quality electric tape to insulate.