pulled engine no start

[chad5.0]

Hey guys, pulled the engine and put headers on and a few other things, I put it back in and I get the fuel pump turning on, stereo ect.. But when I go to turn it over I get one click and then nothing after that, I put a new starter in and battery any ideas?

 

[D3VST8R96GT]

Ground wires.

They get me every time

 

[chad5.0]

I have a temp 4ga going from the motor mount to the chassis and the negative from the battery to the power steering pump by the line on the bottom, Think that could be the issue?

 

[D3VST8R96GT]

I am pretty sure there are 3 big points that need to be grounded. Do you have a multi meter? The starter wiring harness has a ground as well....if its loose you will see it sparking/arching