One problem related to battery cable has been reported for the 2005 Ford Mustang. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Ford Mustang based on all problems reported for the 2005 Mustang.
Complete lighting failure while traveling at night. While driving home all of my lights began to flicker then completely failed, no headlights tail lights dash ( seemed to be a complete electrical failure ) initially thought engine had quit but no it was still running. I did get an engine code indicator light on the dash. Once pulled over I checked the battery cables both were tight still no lights in the process I had put the car in park, transmission locked in park. After a short while lights came back on . Everything seemed normal so I resumed my attempt to reach home however a few miles down the road it did it again. Next day I took the vehicle into the dealership where they told me they had to reprogram the computer. Vehicle so far has operated fine so far. Not sure if the problem was related to the chips in the keys or the anti theft system however if this had occurred on a remote road or highway it could very well have caused an accident. I had no electrical period including the emergency flashers. The battery , alternator , and fuses were all functional.