What does it mean when your lights flash when driving and radios turns on and off

What is your question?

So a week ago the Jeep went off roading threw some creeks and stuff and ever since my Jeep’s interior lights flicker on and off a lot and there is a clicking sound but when I pull the transmission fuse it stopes making the noise but it still flickers water did get in the passenger side floor but when I unplug the radio all the problems stop but it’s not the radio I bought a new one and it still does it I need help.

What makes this problem better or worse?

When I unplug the radio it stopes and it fixed completely but I bought a new radio and does it still

How long has your 2008 Jeep Grand Cherokee had this problem?

A week