64 Barracuda wiring

Wiring caught on fire, had guy rewire and was supposed to use brand new wiring harness made for car(64 Barracuda) , claimed he couldn't get one any more made his own and did one heck of slop job. Looking for someone who knows what they're doing to possibly straighten out or rewire. Within 5 mins of running alt is too hot to leave hand on. Any help appreciated. Thanks Jerry.
Here is how I fixed my own wiring harness fire: Under dash electrical fire

You can do it!