Reason why im asking this here is because its PCM specific..
I know you can go to the O2's themselves..(guess either side...doesnt matter) But ive heard you can tap into the PCM? Is this possible? What is the correct wire to tap into? 1999 LS1 car. Thanks!

Also...for gauges...i want them to be dim and brighten with the interior ****..What wire do i tap into...the power into what wire? Thanks

 

On a 2000 I believe the left sensor is pin29 on C1 and the right is pin 26 on c1(blue connector). Those pins are for the low side of the sensor(sig return I believe)

For the dimmer the 4 way connector on the head light switch-- Pin D(dark green wire) is the IP lamp output circuit