A:AnswerWhen I had mine installed I only took one key fob and the technician said that was all he needed to program it. When I got home and tested the second key fob it worked fine.
A:AnswerI am not familiar with the 1746 remote. To use the Viper DS4+ remote start, which is the latest of the Viper products, you would need a compatible T harness for your vehicle to complete the install.