I have a friend who has an 03 3.7. He changed the starter, battery cable ends , fuel pump and had to replace a ground strap from firewall to engine. AnyWay after all that work it started easily and ran for about 5 seconds the dash electronics went out, he saw smoke coming out from under the hood, he turned off the ignition and took the key out but it was too late. The original ground strap had burned in half prior to installing the new one (which wasn’t factory). Any ideas on what went on. I personally own a 07 haven’t had any electrical issue(knock on wood). Any help or thoughts greatly appreciated, he wants to get it going again.