help needed

[JOHNNYDNGRS]

hey guys i ran in some trouble, on my 2000 sentra the pre-cat went bad, so i went ahead and changed it, all i did was take off the heat sheilds,the bolts to exhaust and to the manifold, the four sensors, and put everything back in like the way i took it off, now the problem when i went to start it, it wouldnt start, it cranks but wont start, i have no lights on the cluster, no headlights,rear lights, and cant shift from park, radio lights and radio does turn on, i double check everything i took off and seems like i put everything back, does anyone know what could be wrong. thank you

[nametakennow]

Short of looking at your connections it's hard to diagnose.

This may sound dumb, but did you reconnect the battery?

[JOHNNYDNGRS]

Short of looking at your connections it's hard to diagnose.

This may sound dumb, but did you reconnect the battery?

thanks for reply. i was thinking a short or maybe a ground wire that goes to one of bolts i took off getting the pre-cat off? did connect the battery

[nametakennow]

I can't think of any ground wires that connect there, but take a look for them.

If you want, you can get the FSM from the link in my signature and check the instructions there to see if there's something you missed.

[JOHNNYDNGRS]

I can't think of any ground wires that connect there, but take a look for them.

If you want, you can get the FSM from the link in my signature and check the instructions there to see if there's something you missed.

ill take a look at the fsm, thank you