Well, in cases like this the problem is usually a silly one. In this case I want you to try a few things:
1. Make sure you
enable TeleOp in the Driver Station... I can't tell you how many times this was my problem
2. Create a DIO Out and make it toggle every half second while in TeleOp (regardless of motor output). Put a small LED or something in it if you can, or just check it with a multimeter. This will be a guarantee that the code is running
and the sidecar is working.
3. Try different PWM ports, Just to make sure. Also, see a wiring diagram to make sure it's wired correctly. (I can't find one to link to atm)
4. Look for a FRC example for controlling a Jaguar and see if that works.
If the Jaguars are receiving signals, they will flash red or green (according to the direction). If they flash and the motors still don't move, the problem lies in the motor or the connection between the Jaguar and the motor, or the motor is faulty.
By the way: if you will notice, there's a global variable "LED toggle rate (ms)" which is used to flash the User LED in Periodic Tasks. Make sure to remove that if you plan on using the User LED.
Also post here any errors you see in the Diagnostics tab.