>> Sorry, Chris but that is bad advice. On the blue foil for 2.1 models
>> BOTH oil pressure switch wires connect through the extra circuit board
>> in the speedo and then back to the oil light. The cluster will "work"
>> with that connector unplugged but the oil pressure warning light WON'T,
>> ever! Not even when you first turn on the key.

Ah, so that's what happened to my '84.  The PO said he replaced the speedometer.  Since the oil pressure light needed slight rewiring to make it work, he probably replace the whole instrument cluster and never realized the oil light didn't work.

Bill