My dad, a mechanic that specializes in electrical work, is going to be installing a Viper 5901 in my 2005 F150 Lariat. It has factory keyless. Which bypass module should I buy? When I go to idatalink's website, I see 13 different matching products for my truck.

I'm not really looking for any of the convenience features -- just an alarm, remote start, and locking doors.

 

The bypass module is needed to override the transsponder chip that is built into the key. So unless there is a certain model that is made to work with the 5901, then you can use any bypass that works with fords system. The place I bought mine from had 3 different bypass modules for fords, one from code alarm and two from idatalink. I chose an idatalink to work with my code alarm CA-6550.