Hi
My Ghia X TCi 130 Est 54 plate has a battery light lit 30sec after start
that doesn't go off. Found a 7.5A battery fuse blown which blew again 30sec
after start up. Ford suggested a faulty ECU or smartcharge wiring fault
related to the ECU or wiring which would cost mega £££. The alternator &
battery are good when tested. The 7.5A fuse blows whether the smart charge
is connected to the alternator or not & I don't have a scope to check the
signals coming to alternator via the smart charge wiring but assume to be
OK. Possibilty that heated front screen isn't working but fuse & all others
seem OK & glove box fuses all seem OK. What can cause this fuse to blow

Any help or suggestions appreciated.