I have a 1990 E-350 bus/van. It has a cracked block, we got a used 7.3 from a 93, F-350 to put in its place, after months of trying to get it in and bolted down, we are there, but the 93 engine has a different wire harness for the alternator. some of the plugs on this harness dont go to anything on the 90, 7.3, the old alternator plug had 1 wire going to the plug, and the bigger wire bolting to the screw , going to the battery, the 93 alt. has a 4 wired plug and the fat wire to the battery. any clues of what needs to be done to wire it and make this thing run?

 

Welcome to the forum!

 

Welcome to the site it's great to have you here

Tony