MusubiMayhem

Hi guys new here, just picked up a 05 LS430 in white and am loving the car. Previous owner stated it needed an 02 sensor in Bank 1 sensor 1 but after inspection I found a black wire pulled out of the wiring harness side of 02 sensor connector.
This plug is super hard to get too but im wondering is it possible to simply shove this wire back into the plastic pin at the back of the connector or do i need to open up the connector remove the pin and reeinsert it? I would love to do this the clean proper way but the work area is super cramped and I have minimal tools.
Is it possible to buy the wiring, harness side of the connector that simply clips into the harness on one end and 02 sensor on the other? or would this need to be spliced in?

DrVlikhell

If the black wire came out bare and without the pin attached, you'll need to fix it properly by removing the old pin and either reattaching the black wire to it, or attaching a new pin to the black wire, and then reinserting the pin into the connector. If you just shove a bare wire into the back of the connector, even if it makes a connection good enough for the O2 sensor to work, it won't work for long. A few good bumps in the road and it'll be falling out again. If the detached black wire was on the O2 sensor side you could cut and splice a new connector onto it or just replace the O2 sensor. But on the car side of things you need to repair it properly. I haven't seen the car side of the wiring harness available for sale, except for with a used engine harness loom on ebay.

My suggestion is to watch several videos on de-pinning/re-pinning connectors and get a cheap set of pick tools, like the little orange ones at Harbor Freight for $2, and then a decent wire cutter with teeth at the end of the nose for crimping in tight spaces. One like the Klein 1010 or Channel Lock 908.