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Message: <blockquote data-quote="Thomas_W" data-source="post: 1402155" data-attributes="member: 9106">First off. Red's aren't grounds, those are +12v power wires.   Theres also no ground that runs from the starter to the fuse box, that is the Power wire that provides +12v power to the starter from the battery.  The Ground for the starter is provided by the metal case of the starter, engine block and then finally the ground cable to the car chassis.  If your Ford mechanic buddy didnt know that, you need to find a new mechanic.   The stock ground wire is normally a flat braided cable on the driver side that runs from one of the motor mount bolts to a bolt on the bottom side of the driver side frame rail. Since you shorted the main fuse panel directly to ground, you likely fried some wiring.  Hopefully for you it wasnt any of the wiring in the fuse box, but i would highly recommend inspecting it to be sure. If you get a click or a constantly tapping like sound when you turn the key, it could be a bad power connection to the starter.  It could also be a bad wire from it being shorted out. You really need to post photos of what your referring to with questions like that.  Trying to diagnose issues online is damn near impossible.   Them throw in the curve ball of not nothing how or what was done in "mods" due to the experience/quality (or lack of) by previous owners, mechanics, etc and it becomes even more difficult.</blockquote>