i always keep spare relays in my car i have had both the ecm and fuel pump realy go out on me. On an 89 the grey horn relay is interchangeable and you can use it as a spare to get you back up and running. You can also jump a terminal on the obd 1 terminal to get the fuel pump to come on.
'08 Crown Vic P71
White, Push Bar, spotlight and lots of hail damage(aka speed bumps).
'90 Crown Vic (SOLD)
Dual Exhaust, CAI, HO intake and TB..
Stiff suspension on all 4 corners
'89 Crown Vic (deceased)
310 HO WR-AOD
I break it, I fix it.