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H23 to H22a4 swap ?'n (oil pressure swith)
Ok I have a 92 Si prelude that previouslly had and H23a1,and I'm currentlly in the process of swaping in my H22a4 its about 60-70% done just had a question regarding the oil Pressure switch that goes on top of the oil filter I Mean I See the Threads in the block were sensor would go but if I recall correctlly the H23 didn't have one but I read somewere online during my searching that the sensor is needed and has too be wire up
Now my ?'n is do I need this sensor and how those it get wired up?
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