if you have long arms you can actually reach it from the engine compartment. it is to the driver side of the exhaust. you will see the wire loom running down to under the car.
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72 442 "THE BEAST", 99 Alero - OSV Replica w/ original OSV parts, HURST Dual/Gate Shifter
Beware of the BackStabber
OK imagine this is from the driver side with the manifold still attached. It's the big hole in the side. (ignore the cluttered work bench, the Z is all over my garage )