Hi, i bought a 198? Ford Econoline but its got a

hi, i bought a 198? Ford Econoline but its got a Ford transit 2.5 deisel engine in it. The wiring is all over the place, need help with diagram for wiring loom , I dont have any history with the vehicle, but its a conversion van, with swivel seats , 6 doors, and air con throughout with wiring for t.v, radio etc. bBut again, they are hanging out everywhere, any help would be appreciated..Thanks