The definitive list...
I'll add to the wish list! If someone has swapped in a Magnum and kept factory OBD2 EFI, it would be nice if they would post the year of their motor and wiring, and which wires you need to make the motor run. If I can't find something like that before I put the 98 5.9 Magnum in my old truck....I'll try to figure it out and put it in this section.
I was going to put together a list and show the connectors in pictures but have not had time.
The year of the engine does not matter, for the most. Neither does what vehicle it came out of, although van harnesses have the PCM mounted high up front making their harness weird to use in a car.
You can even put an OBD2 harness, injectors, and PCM onto an older OBD1 engine And it will run as an OBD2.
Some early OBD1 engines had EGR valves, so that would need to be blocked for this.
The stuff that stays hooked up is sensors like CKP, Cam sync (distributor), TPS, MAP, ECT, O2, and IAT. An output that stay would be IAC.
Stuff you don’t need for it to run is things like evap canister purge and air conditioning compressor. If running air conditioning, keep the compressor clutch and connect high and low side AC pressure switches.
From memory again, so I know I missed some.
