The Camry came in early this morning with the owner complaining of no exterior or interior lights. After deeper discussion it was quickly discovered that all of these symptoms took place after a recent battery replacement elsewhere.
As we immediately suspected that the battery cables were initially installed backwards ,we discovered a blown 100 Amp Charging System fuse.
This fuse is relatively simple to replace as long as you are careful aligning the eyelets of engine harness to the fuse blade seat. Utilizing a simple magnet while slightly pulling up on harness to align usually does the trick.
An easy and inexpensive fix.