I have an 86 V-6 mustang convertible,my son rolled his 93 sedan so I put the seats in,then car would not start.Fuel pump was replaced by reputable mechanic 9 months ago.Fusible link is good inertia switch was also OK.I went to the forum here and read other threads and found out there is a fuel pump relay under seat.wires were greenish blue and yellow one was pulle out of relay.I tried jumping relay but no luck.I bought a new relay and cleaned wires and connections,car started first try but fuel pump wont turn off now.I disconnected battery but please community what is wrong now

 

The relay has a connection directly to
the battery. You have wired the relay
with the 12 volts directly to the pump.

 

Man those fuel pump relays are a headache.

 

the relay only goes in one way and nothing else was altered how does the 12 volts cut off to relay maybe I can improvise but I hate to cut any original wires.