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jrd1990zr1 · 08-19-2011

FWIW, The part pictured in the link is a later MY sensor. A 1990 sensor has a round 3 prong plug. I believe they changed the sensor connection after the 1991 MY to look like the in-line 3 prong as pictured. I can post a picture of a 1990 sensor if you would like.

I think if you look in the Helms manual there is a few resistance measurements you can make to verify the sensor works.

08-19-2011	#4
jrd1990zr1 Join Date: Dec 2005 Location: Delanson, NY Posts: 923	Re: WTB SIR Sensor FWIW, The part pictured in the link is a later MY sensor. A 1990 sensor has a round 3 prong plug. I believe they changed the sensor connection after the 1991 MY to look like the in-line 3 prong as pictured. I can post a picture of a 1990 sensor if you would like. I think if you look in the Helms manual there is a few resistance measurements you can make to verify the sensor works. __________________ 1968 convertible Lemans Blue, 1986 coupe Medium Blue NCRS Top Flight (sold), 1990 ZR1 #2529 Red NCRS Regional and National Top Flight (sold), 1990 ZR1 #2124 Charcoal Metallic NCRS Top Flight 2010 & 2018, 2003 Anniversary Red Convertible (sold)