This is the tricky part with wiring on an SE - GC. The voltage limiter at the cluster powers a normal non rallye fuel and temperature gauges and the rallye cluster fuel, temperature and oil pressure gauges.

What is different with the SE - GC the fuel gauge does not use the voltage limiter for power, but with power from the low fuel relay. So, the normal dark blue wire from the fuel sender through the rear wiring harness connects to the DB terminal on the fuel gauge. Then there is a second identical dark blue wire from your low fuel relay mounted on the passenger side dash near the key-in buzzer relay that connects to the power input side of the fuel gauge.

The low fuel relay is a two circuit device driven both by heat. One circuit creating the pulsing voltage for powering the gauge and the second is the monitoring side of the fuel sending impedance to be able to light the low fuel bulb in the overhead console.

The picture of the internal circuit board shows these two contact points. The heat from the coil wrapped on the arm of the low fuel light contact would arc the arm away from it's resting point to keep from lighting the bulb between a full tank to just under a quarter tank. The heat from the coil wrapped on the arm of the pulsed voltage gauge contact would do just that. Warm and pull away, cool and make contact, on and off about every second.

I hope that clears up the SE - GC fuel wiring or is as clear as mud.









Jim