How to find a short circuit in fuse box, fuse keep blowing, wiring harness protection from a short

How to test a shorted circuit in a fuse block or a wiring harness, using a meter to test a shorted circuit, fuse keeps blowing how to fix the problem, where to go when you have a shorted circuit, simple way to test a circuit that keeps blowing a fuse, how to save money on not buying more fuses to see if the circuit is bad.

[@AreUReady2Go]

About a year ago, my USB port quit charging my phone. Replacing the fuse would fix it it for a little while, then I just gave up and use a power pack. Now all dash lights come on (sometimes fixed by re-booting the system), moonroof won't open and now AC blower motor goes in and out. Conked out yesterday, then comes on when I hit a bump. Worked this morning, now out again. I don't want to get ripped off diagnosing the short. Advice?

[@user-mf1wx3xz6e]

My heater is blowing fuse

[@willgachassin7084]

Since it's so easy and quick, just come to my house and fix this old 91 Ford F-150

[@atrguide8724]

What is it doing? I might be able to give you a direction to go.

[@shus369]

Hi, my car is keeps blowing the fuel pump fuse . Where should I be looking in order to figure out what's wrong?

[@atrguide8724]

I would look by the tank and may disconnect the fuel pump to if it still blows the fuse

[@shus369]

@@atrguide8724 I disconnected the fuel pump and still blew the fuse.