THat's a tough question. The fuse link is darn poor protection, and yes!! LOL!!1 I have a story about that. But a breaker might be worse. A breaker small enough to protect the wire might nuisance trip under high charging loads
Just where are you measuring the drop, under what kind of conditions (electrical load/ charging current) and how much is it showing?
no load just my battery plugged in. i bolted the two ammeter terminals together for testing. I measured at the ammeter terminals and the alternator with the car off and all the voltage drop comes from the link with no ammeter in the circuit.
