Fan motor fuse blowing

[lush90]

That makes sense. I ordered a new one, should have it by the middle of the week so hopefully I'll be back in business. The only other issue with this truck besides the horn not working is that about one out of twenty or twenty five starts, it acts like it has a low battery, barely cranking. Jump it and it starts perfectly. The battery tests strong and the starter is relatively new. The ignition switch is worn enough that I can remove the key while it's running, so I am guessing it might be responsible, but then why does it start easily with a jump?

[mllrtm79]

The only other issue with this truck besides the horn not working is that about one out of twenty or twenty five starts, it acts like it has a low battery, barely cranking. Jump it and it starts perfectly. The battery tests strong and the starter is relatively new.

I had a similar issue, finally replaced the battery and found a dead cell that wasn't holding a charge. Also it turned out that the battery cables were just slightly loose, replaced the bolts in them when I changed out the battery, and haven't had the problem since.