if your blowing a fuse that means you have a short somewhere.
you have to check for continuity to ground at various points in the circuit isololating that part of the circuit first. put the negative lead on a known good ground. if your ohm meter reads like the segment is open then thats not where the problem is. if you get a resistance reading then its in that section.
since its blowing a fuse its obviosly on the power side of the load between the fuse and the load but remember to isolate it. you will need a wiring diagram probably.
if you need any help just let mne know and ill try to help you best i can online
