im not expert but seems like one of you fuse boxes are in bad shape. check first the one is next to the battery, but not only on top check under the fuses(were the cables are connected), if you see worn or burn cables there is you problem. check the ones are touching and replace them. if you dont find anything there maybe you wanna look on the driver side kick pane there is a lot of cables, wile you check them be very careful to nt move them so much.
i very sure that the problem will be on the fuse box next to the battery,also chech the cable that go from the battery to the starter and i recomend swap it for one that is '0 gauge' you can find this at the audio store.any way i hope this help's.