i put a b18 ls engine on a 90 honda civic and integra wired harness is plug in , but car wont start . engine fuse box and internal fuse box has electric but nothing turn on ... no lights no horn no nothing is like i had no battery ,, the only thing is that the tail lights stay on, they wont shut off unless i unplug battery.

 

i need help hereeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee anyone

 

thanxx 4 notting

 

All your grounds connected?