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behind distributor near the oil pressure sender unit,you can barely reach it removing the distributor cap (may be a single or coupled unit (pressure sender/oil switch)
Last edited by tunedport85inject; May 29, 2013 at 05:35 PM.
there are different layout for this unit 84-85-86-87-88 switch (two prong) and pressure sender,it is a one unit in 89 like the first pic,your 91 uses the same switch as 89
see Ecklers http://www.ecklerscorvette.com/corve...1989-1996.html
oil temperature sensor is over the oil filter housing,this is for oil temperature gauge.Behind the distributor there is the oil PRESSURE sender (for oil pressure gauge),and oil switch,this is a backup feature in case of a faulty fuel pump relay.