So as I was driving my 91 f150 5.0 yesterday the jack handle decided to weld itself to the positive battery post and I lost all power . Replaced the Ecc relay and drove it home then it shut off again replaced the relay all lights and everything worked but I shut it off fired it up tried again and everything was dead is it a fuseible link or is my Ecc dead because the Ecc relay keeps tripping any help would be appreciated.

 

Unplug ecc and see if rely keeps tripping