ok here are the colours in the large grey connector, and their functions.
white/blue - FI lamp (the ECU grounds this wire to illuminate the FI lamp)
yellow/green - Tach signals
blue/red - oil pressure (the oil pressure switch grounds this wire when pressure is low)
blue/black - high beam (high beam lamp lights when this wire has 12vdc applied)
green - ground
green/black - ground
light green/red - neutral (the neutral switch grounds this wire when in neutral)
red/green - constant 12v (this wire is ALWAYS hot, it is used to retain the dash memory for the trip meter)
brown/black - low fuel lamp (this wire feeds the thermistor in the tank, it is NOT a switch. if you want the low fuel lamp on a different dash, you need to wire the black/brown from the power circuit to the positive side of the coil on a relay, then wire the negative of the coil side of a relay to this wire, the thermistor needs voltage applied to it at all times, as fuel stops cooling the thermistor, its resistance decreases enough for the current in the coil to increase enough to latch the relay, use the contact side of the relay to light an indicator lamp)
green/blue - engine coolant temp (this wire is based on the ect sensor, i do not know the range on this sensor)
black/brown - power wire to the dash
black/brown - power wire to the dash (these two black/browns are fed from the same source, you will likely only need one of them for your dash)
pink/green - speed sensor (i do not know exactly how many pulses per revolution this sensor provides, but it's a lot)
light blue/white - right signal run light (this wire is interrupted by the signal light switch)
orange/white - left signal run light (this wire is interrupted by the signal light switch)
light blue - right signal (this wire feeds the signal lamp through the signal relay as well as the dash indicator lamp)
orange - left signal (this wire feeds the signal lamp through the signal relay as well as the dash indicator lamp)
green/orange - ground
that's all you will need to know to make it work.
Last edited by Wibbly; 09-15-2018 at 12:13 AM.