s-10 wiring problem

Alright, I'm putting my front end back together and i'm having some electrical problems...go figure. ALright i'm thinking i have a grounding problem. Here are the ground wires i have found on the front end of the truck..



2 grounds on the negative post of the battery. (where do they go???)

2 grounds on the green plug harness that goes into the bottom of the fuse box they control your lights and such and airbag sensors..(where should they go???)

and I found this thick flat metal ground? that's attached to the drivers side of the firewall. (is it necessary to start?)



Now, i'm trying to get the truck started besides those things what grounds should I check and how do i check to see if the fuel pump is priming?



All help is appreciated!!!

thick metal one goes to frame 2 off of neg. one to frame one to rad. support other 2 not for sure