Stang951, sorry for my confusion. it happens as i get older.
yep, i dont think there are any relays in stock power door lock wiring. i was not even aware that there was a CB anywhere (the two i remember are wipers and power windows).
i looked through my collection of stang stuff and came up empty. im pretty sure Tom doesnt have anything either. i didnt see anything in his diagrams(and i recall him saying he had not done them [yet?]).
now for a plan of action: unless i missed something, T-T, you have no locks at all?
BTW, it should use reverse polarity locks, if that was not mentioned.
i would get at the connectors in the kick panel (that is the easiest place to start, IMHO). check for contintuity. this will tell you which way to go (either the power source is bad, or if ok, head for the door panel). in 87, i think lock was pink/light green, and unlock was pink/yellow. i could be wrong (faint recollection)....
then check out that ground that Stang951 is talkin about. im hopin he hit the nail on the head for you. with reverse polarity locks, you need grounds present....
good luck.
BTW Stang951, i have been meaning to ask you what year your ride is. i dig your set up and mods. we think alike on what to do....