Newbie here, gotta big prob.

My truck will only run right if its jumped, once the jumper vehicle disconnects, it runs like crap. Definetely something electrical though, I had the alternator pulled off and teste, it was bad, put new one on, still same problem.

I was told that the alternator that went bad couldve thrown the "alternator master fuse" located somewhere in the engine bay. I cannot fiind this fuse, can anyone point me in the right direction?

I know my battery is good, it will hold a charge, but it is like the alternator is able to send power to the battery once the truck is running.

Also, two days before all this happened, my entire instrument panel went dead, all gauges are not working at all, possibly a linked problem? I dunno, any help is greatly appreciated.

The truck is a 5.4L F-250 4x4