fuse link melted! why???

[cudadude013]

I just bought a new engine harness from year one. I plugged it into the bulkhead, hooked it up to the ballast resistor, ignition, starter relay, and alternator. when I hooked up the battery to the fuse link just melted. Anyone know why? Did I just waste $130?

[Ghoste]

Most likely a short someplace, you're sure everything is connected perfectly?  On the plus side, if the problem does turn out to be in the harness, YO has a good return policy.
You didn't touch anything under the dash did you, like the ammeter?

[1969chargerrtse]

Sure sounds like a short and if you hooked everything up correct I would think it has to be in the harness?  We have an old trick in the elevator business for trying to find shorts.  If you were to take a wire from that link to ground with a 12v bulb connected you would see the bulb go bright as it is shorted to ground.  If you pulled off one connection of the items you connected to, one a a time the bulb would dim when the shorted connection was disconnected from the item, alternator etc...  Not sure if thats easy understand, but it's how I find shorts without blowing tons of fuses doing it.  If the old harness had no issues but was just old, I'd return it.   Good Luck.