[Dopefish]

Here are the inputs I've deciphered as to their purpose.

GRND - Ground (Common grounds)
2P - Speedometer (Input signal, speedometer gauge) [2 WIRES]
BAT - 12v Constant (For S14 in-cluster clock)
IGN - Ignition
FM - Fuel Meter (Input signal for fuel gauge)
CHG - Charge (Indicator, charging/battery issue)
T/R - Turn Right (Indicator, right)
T/L - Turn Left (Indicator left)
TM - Temp Meter (Input signal for coolant temp gauge
BRK - Brake (Indicator, lamp for brake issue/brake lamp failure)
FUEL - Fuel (Indicator, low fuel)
BEAM - Brights (Indicator, high beam headlamps)
TAM - Tachometer (Input signal, tachometer gauge)
BELT - Seatbelt (Indicator, driver seatbelt not secured)
OIL - Oil (Indicator, low oil)
AIRBAG - Airbag (Indicator, restrainsystem complication)
DOOR - Door Ajar (Indicator, open door)
Check ENG - Check Engine (Indicator, ODBI/II complication)
ILL + - Illumination + (Positive voltage for dash lighting circuit) [2 WIRES]
ILL - - Illumination - (Negative voltage for dash lighting circuit) [2 WIRES] {Two specific ground wires}
EXH - Exhaust Overheat (Indicator, abnormal temp of catylst)
OM - Oil Meter (Input signal for oil pressure gauge)
WASH - Washer Fluid (Indicator, low washer fluid)

Still unsure of the purpose behind the Ignition connection... it seems to correlate with the speedometer, which might be part of my issue.

Asside from that, the airbag lamp is constantly illuminated, even though I don't have the airbag indicator wired to the gauges yet... (Possible short somewhere?)

_Kris