Our cars are getting up there in age and the plastic electrical connectors, especially those in the engine bay, would literally crumble in our hands when we work with them. Fortunately, these parts are readily available online. Attached are some drawings and sketches to help with locations, pin-out information, and part numbers. Hope they are useful...

Please take a look at the link below for 2004-2006 LS430 electrical connectors.
https://www.clublexus.com/forums/ls-...04-2006-a.html