Not sure what you mean (I've never dealt with another manufacturer's alt wiring), but this is the whole circuit in the cluster if it's helpful:
This is for a 90-92 CE2 MFA cluster, like the OP has. Maybe you can sort it out. The battery light LED is supplied switched 12v by the black trace, which then travels through the light blue trace (this is the back of the cluster, so the battery light on the left center is mirrored to the right center position). It then passes through a resistor that limits the voltage to the LED so it won't burn out, then connects to the teal colored trace, which passes through a diode to the other baby blue trace out to the alternator. If that is grounded, the battery light will come on. The load put on the exciter wire is by the two big resistors that also connect to the teal trace, and they are supplied with 12v as well. This also means if the cluster is unplugged the alt won't charge.