electric fan / alternator question

Yes sir! just in what I mentioned. Fuseable link burnt up while at the same time, the wire that runs through the bulk head went up like a match. Second car fire.

Car was dead in the water, lucky enuff it was in my driveway. The bulk head connector was barley making contact and with that inmind, I'm sure it added to extra resistance and heat.

So it sounds like you hooked up the fan without a relay thus pulling all the fan current through the firewall and the fusable link. It's no surprise the fusable link opened up, it's only designed for a certain amount of current. Run the fan with a relay with the relay power coming from the battery or near it and not through the ammeter circuit. Be sure to use a fuse in series with the relay as well. Also, mount the relay close to the fan.