Electrical issues

Hi my 2009 tacoma truck shorted out this week. It got stuck in park after I took it out of reverse because it had felt not right sounded like it was revving. After this the turn signals stopped working, a/c, temperature gauge and backup camera all ceased. I replaced the number 8 fuse twice. First fuse lasted 5 minutes. Second one lasted until mechanics. They'd cannot figure out if it is the backup cam that caused this short or not. They pulled the wiring assembly for now. The camera has been intermittent blue screen crossed w inaccurate fuzzy blurry pictures. Has anyone had this issue and if so have you narrowed it to the back up camera being the cause? Thanks for reading!