1990 Supra stalling out?

This car runs great, everything is fine on it but when I shift out of 5th gear the engine RPMs drop to zero and the engine dies. It doesn’t sputter or make any noise, but it just dies.

Battery was replaced a couple days ago and now this is happening so maybe it is an electrical issue. Ground is okay, car idles fine any other time except when coming out of 5th. Any help is appreciated!

bumpppp…

Plugs?

X…