Hi, im having some issues with the wiring in my 2004.5 G35 auto, the 120a fusible link blew several years ago i replaced it and it didn't do it again, until a week ago, it blows right after driving the car. So i took a spare one and put it in. Got it to the shop, everything seemed to go good, tested some starting sequences, and had allowable power to the starter, fast forward 4 days and it blows again. I've checked the wiring schematics and I'm lost. I cannot ever find when it goes through the 120a although I do know it does. I have a new fusible link but I don't want to chance it blowing again as it's 120$ here in canada.
I've read through multiple post on different platforms. I don't know where to even test or look for possible problems, other than directly at the wiring harness. Is there anywhere someone can point me towards.