I am working on a TBI to TPI swap and need some help. I bought a new GM 1990 TPI Harness and have found every connection that I need except the connection for the mannifold air temp. sensor that is located on the bottom of the plenum. Any ideas where it would be on the engine harness?

I've never found it on my cars. The wire disappears behind the dist. and into a harness back there.