Electrical Issue

[Mike Massingill]

Just finished rewiring truck, new single wire alternator with built in regulator, new optima battery.

We have a main circuit 30A fuse that blows after driving the truck about 5 minutes. Replace the fuse and drive another 5 minutes. Does not blow while the truck is idling.

We do not feel we have a short, we have traced the wires and the wiring is new.

We feel the fuse is blowing from an overload of maybe 35-40A.

Could this be caused by the atlernator somehow over feeding the circuit?

I will pull the wire to the alt in the AM and drive it to see what it does. If it does not blow what do you recomend to fix it?

Thanks, Mike