I repaced my spider mfi with a BWD 63885 and now I get code p0200 , Injector circuit open. Engine runs real rough Not sure whats going on. Any ideas. Is there a schematic for the spider plug?

 

If You pull the plug out, You'll see the two rows of the pins, three pairs each. Each pair correspond to a coil of one injector. The spider I got on a bench has about 12 Ohms per coil. Checking out the resistance You may find out whether Your spider coils are ok. If You find a pair that is incomparable high to the others, then probably this is the injector, which system detects as open. If all the pairs are OK, then You have to check Your wiring harness.
EDIT: I see BWD 63885 is for V8, is that correct? If so, then two rows, four pairs each. By the way, You may also check and compare the coil resistance in between the old MFI and the new one.

 

Here ya go:

George

 

Maybe a pin bent over inside the connector????

 

A great diagnostic tool is a set of needle point multimeter leads because you can push them into the back of a connector past the wire or pierce the wire itself leaving only a very small mostly self healing hole. If the wire is in a critical spot for moisture you can seal the hole with liquid electrical tape.

These are OK quality but they get the job done. You just cant get too aggressive because the lead metal is soft:



George