*sigh* No there is not a password for super saiyan vegeta in tenkaichi however, there is a password for super saiyan 4 vegeta in dragonball z tenkaichi 2.
the potara earings
At the end of season 1. Goku stays as a ssj4 for the rest of season 2.
Goku and Vegeta
Vegeta turns ssj4 in episode 59 of dragon-ball gt
episode 129
GOKU He IS very strong or vegeta
Yes in dragon ball z budokai tenkaichi 3 you get much more characters like king cold, king vegeta, etc.
Saiyan Saga Vegeta would end current Supes.
dragon ball z raging blast
Dragon Ball Z - 1989 Goku vs- Vegeta--- a Saiyan Duel 1-23 was released on: USA: 3 May 1997
Goku turns super saiyan 4 in Dragon Ball GT Episode 35 (Goku's Ascension) Vegeta turns super saiyan 4 by bluts waves when fighting Omega Shenron in Dragon Ball GT Episode 59 (Super Saiyan 4 Vegeta)
because vegeta's dad before is a king of the sayian but king vegeta died and prince vegeta will be the next king of the saiyan