The connector for the idle up valve under the throttle body is blue too. It plugs into the backside of the valve. It bolts to the manifold with 2 10mm head bolts and has several coolant hoses connected to it along with two larger hoses, one goes to the throttle body on the pass side and the other goes to the intake plenum by the cold start injector.
Jeff

It's all good!
83 Shortbed stepside lots of mods
82 Shortbed fully restored
85 Shortbed daily driver
88 4-runner-Wife's daily driver