Hey guys I'm new here so if I posted this wrong let me know.. I recently acquired a 91 civic EF with a b20z block and b16a head. Previous owner "custom wired" an OBD0 to OBDI conversion harness and installed a chipped p28 but things got crazy. Long story short, the car won't start. I have very little experience with anything that doesn't have a carburetor.. Can anybody make heads or tails of what I'm looking at/ tell me where to start? It looks like there are two OBDI harnesses so I tried to diagnose which plugs were which. So far all I can figure out is that no matter which combination of plugs I use, I have fuel pressure. The starter seems to only crank when it wants to, regardless of if the car is being jumped or not.