Our 85 which was previously an Auto has been converted to a 5 speed and we also swapped the Gauge Cluster to that of an SR5. We currently have all gauges working minus the oil pressure, we checked the gauge and sender per the FSM and all seems within spec. Our Oil Pressure sender is placed at the front most plug not close to the oil filter. Is this the reason for the non-functioning gauge, I can't find anything for placement of the sender. Any help is appreciated.