Dived into the EIS wiring to check input wires to a number of functions. All seemed to be wired properly. Did find a discrepancy with the wiring instructions. One instruction sheet said to connect one RPM wire to the input and the other RPM wire to ground. Another instruction sheet said to connect RPM wire #13 to the input and RPM wire #26 to ground. Naturally, following the first instructions I connected #13 to ground and #26 to input. Gonna be ugly if I have to change those around.