One problem related to wiring has been reported for the 2008 Honda FIT. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Honda FIT based on all problems reported for the 2008 FIT.
Combination headlight switch was faulty. While low beams are on, toggling the right turn signal activates the high beam. I brought the car to the dealer and performed the headlight switch recall hoping it would get fixed but the recall only addressed the wiring harness. The problem persisted after the recall. I googled it and it is a common problem. Told the dealer about what I found online and was charging me extra for diagnostics and replacing the part. They told me the recall did not include replacing combination switch itself. Then, I bought an oem replacement and replaced it myself which fixed the problem.