My back up lights are not working. I have a 99 civic si no swap could use some help i check the blubs and the fuse anything eles im missing

 

maybe you broke your reverse sensor in the tranny.
Iirc, its directly on top of the transmission. its the one that looks like the top of an onion with 2 wires coming out of it. There should be a rubber case thing over it. Pull that up and there ya go

 

ok cool how can i replace that if that what it is and how much

 

its like one big bolt. its a 20+ mm, i dont remember the exact size.
Check www.hondapartsdeals.com
its a reverse sensor

 

Trouble shoot the system first. check for lose wires / power/ etc