This DIY is on a 2005 Corolla .
When I purchased this car the trunk light was not working and I couldn't figure out why . I checked all the fuses and the wire to see if maybe it was disconnected .
I noticed that the rear light socket had power coming through it but when I grounded the other wire then the light came on .
So I went to the trunk light switch where I noticed there was no power going to it so I followed the wired to the rear side panel where you have to pull the carpet down .
I noticed there was a plug with nothing plugged into it . Then I noticed one wire was on the left the live wire was on the right .
So I connected the two plugs together and the light switch works .
I don't know if anything went there but it was odd to see that the wire went to no where .
I put silicone there to make sure the wires do not move or touch each other .
I put everything back and now I have power again .
More DIY at www.corollacarclub.proboards.com