a Ground problem..??

[bamboo]

Aloha guys.. So was off for an adventure this afternoon in the truck, Was going to hit up a nice 4x4 road with some mud..
But I hop in and turn the key.. and nothing happens no Wait to start, no idiot lights, No clicks..

So climb under the truck and notice It looks like my downpipe coming off and banging my valve cover <-- (previous problem) might have busted this ground cable
Passenger side, left corner theres a bolt with a bullet type connector thing, Looks like where the cable went.

Could this cause such issues? I don't know much about electrical stuffs, But I sure was

Mahaloz
-Patch