How do I program a Jensen remote

SOURCE: Programming a Jensen JER 422 universal remote to a Sanyo Television

To Sarah,
In order to program your TV:
1. Manually turn on your component.
2. Press and hold the component key you wish to program, in your case the TV key.
3. While holding down the component key press the four-digit code using the number keys (0-9) to enter it.
4. After the fourth number is entered, the illuminated ON-OFF key turns on. At this time, release the comonent key. If the illuminated ON-OFF key turns off, you have entered a valid code.
NOTE: For Sanyo TV it could be any of the 8 next codes:
1004, 1048, 1049, 1073, 1080, 1162, 1169, 1180
Good Luck !
Carlos Vallejo

SOURCE: programming code for remote control jensen jr321

I am not 100% positive that the JR-321 is supported in the 300 series but.

Jensen JR300 manual - If you cant get it to work using one of these codes it does not support your unit.

http://157.254.235.130/public/IBJ34500SE.pdf

or

http://157.254.235.130/public/J3_4_500_MANUAL_S_E.pdf

Hope that helps!

SOURCE: instructions for programming jensen jr 300 remote

I'm not sure if your remote will operate the vizio TV. You can try a code search and see if that works because the vizio TV is not listed.
Here is the user's manual.

SOURCE: How do I program a Jenson SC340 Remote Control to my Pansonic 20 in TV

http://www.remotecodelist.com/remotes/Jensen300Series_1.pdf

http://www.remotecodelist.com/remotes/Jensen300Series_2.pdf

SOURCE: lost programming codes to Jensen jer- 422 universal remote.

1030, 1035, and 1191 are the codes for orion tv