[kandhmfg]

Been struggling with this for a while. Concern number one at this point is when I turn the key in the on position, the DME relay starts to buzz. I am pretty sure it shouldnt do that. Trying to trace what the problem might be. Seems like a ground issue possibly?

Sidebar: If I pull the original relay out from the fuse block under hood (the red relay) it doesn't buzz, but would assume the relay needs to stay so the circuit stays completed (am I wrong?)

Engine is '95. DME now has a Steve Wong non-immobilizer chip in it now.

What I know:

I have 12v from the battery at the relay posts 30 and 86 with key in off position.
The harness has 12v at DME terminal 18 so there is primary power to the DME unit
With the key on I have 12v at the coils both posts

Without battery connected I checked the following with ohm meter and:
I have continuity from DME terminal pin 37 (s/b switched power) to DME relay 87
I have continuity from DME terminal pin 36 (ground) to DME relay 85
I have continuity from DME terminal pin 3 (ground) to DME relay 85b

The fuel pump circuit seems to be the culprit of the buzzing. Again, it is only when the key is in the on position, and when I pull the original relay out from the fuse block under hood (the red relay) it doesn't buzz, but would assume the relay needs to stay so the circuit stays completed (am I wrong?) Could it just be a bad relay in the old position?

I touched the switched posts of the dme relay with a grounded test light quickly, and the DME buzzes when contacted with that?

Trying to help a friend with this, any guidance is appreciated.

How do I check the flywheel sensor to make sure it is sending a signal (just in case).

Thanks,
Erik