I have a 94 ford ranger I purchased a 99 parts truck and I am trying to adapt the 94 harness to the 99 engine harness need some advice has anyone attempted this

 

Welcome to the forum

1994 and earlier Rangers used the 60 wire EEC-IV computer, OBD1
1995 and up Rangers use the 104 wire EEC-V computer, OBD2

So there is no compatability
If automatics the even worse
Also 1994 used 30psi fuel pressure, 1998 and up, used 60psi so a different fuel system as well
There will be quite a few splices for 12v and grounds, also speed sensor issue

I would say its a no go
And no never read of anyone trying this

But you said you bought a 1999 Ranger for a parts truck, then said you were trying to fit 1994 harness into the 1999???