Well my cheapo inverter bit it today. . . not its own fault.. i had it apart putting a remote switch on it and think i messed it up. . . .Well i got this today to supply the power from now on. . .i think it will do alot better job. . . . and before you go bashing on me for not using a dc to dc unit. . .i have other uses in my car that require 120 volts. . . such as customers computers in onsite testing and the occasional small tv. . here is the new unit