Why does the fuel pump fuse keep blowing on a 2003 mustang gt? on 2003 Ford Mustang GT

I have changed the fuel pump, the relay and the constant relay. Paid a mechanic to fix it but he could not.

by in Clinton, MA on August 01, 2013
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer 1 comment
ANSWER by , August 01, 2013
TO MUCH RESISTANCE IN CIRCUIT. CK FOR CORRISION ON PLUGS AND WIRING AND ANY OTHER CONNECTION
COMMENT by , August 01, 2013
It's not that; I've checked all wiring and plugs. Any other ideas?