2G Engine fuse blown ?

[Inkdlyfe]

So my car been running just fine after my rebuild no issues. All of a sudden it blows the 30 amp engine fuse.. went through I'd say about 6 of them
... noticed car will start fine once put into gear and gets to moving it shuts offf.... it can idle and rev up over and over again second u put it into gear it moves and dies and blows fuse:/ what all connects to the 30 amp pink fuse under the hood .

 

[tealgsx]

You have got a short to ground somewhere. Sounds like a wire hitting when the engine rocks