I was driving my 89 Spider Veloce the other day and under hard acceleration it cut out completely. Smoke started coming out from underneath the package tray then I saw smoke coming from under the hood. I parked and turned the key off and it kept getting worse until I ran back and pulled the ground cable off of the battery. Upon inspection, a red wire running from the ECU up to the square main relay then down the harness running under the carpet and through the firewall and all the way to #2 fuel injector. Because of it being next to other wires, those were damaged as well. All of the injectors were replaced 200 miles ago with new. When I reconnected the battery with the key off it started in again. I imagine the melted wire is contacting a constant hot at this point. I am wondering what caused this to happen and will my ECU be damaged? One wire running to the relay was the only one that melted among the other wires running there, I am going to see which one it is. I unplugged the long plug to the F/I ECU and there is no evidence of melting on the plug itself or into the box. UGH.