New Alternator Problem

14ga is nowhere near enough. You can run this alternator safely if you run an 8ga wire directly from the alternator's B+ stud to the battery's positive cable terminal, but run it thru corrugated wire loom and take care to provide adequate circuit protection (120A fuse or two 60A fuses in parallel) at both ends of this wire, so in case of a front-end crash or other catastrophe that shorts the wire to ground, you won't start an electrical fire. Adding such a heavy-gauge charge wire will take your ammeter out of the circuit, so it will no longer read accurately. Follow the link I posted to read about options for including a functional charging system gauge in your upgrade. You do not need to go to a 2-wire regulator, you can continue to run the 1-wire regulator system, but use a good quality regulator such as NAPA Echlin VR-1001 or Standard #VR-128.