MagnumTN
Junior Member
My 1985 D150, 318 Magnum, was having non start issues. After testing and/or replacing all the components in the system, starter, relay, ignition control switch, ballast resistor, it finally turned out to be a bad ICU. Since replacing it the truck is now starting, but is not charging the battery. It was recommended to me that I replace the 3 fusible links located on the drivers side wheel well with fuses, which I did. There are 3 fusible links designated by wire color, black, dark blue and orange. I replaced the black one with a 20 amp fuse and the other two with 15 amp fuses. As soon as I started the truck, the 20 amp fuse blew. I subsequently replaced the 20 amp with first a 25 amp, then a 30 amp fuse. Both of those also blew. At this point I'm not sure how to proceed. Should I replace it with a larger fuse, which would require a larger fuse holder, or is the problem somewhere else? Any advice on this issue would be greatly appreciated. Thanks in advance for your help.