missing hose in engine bay, aircon recirculation? 92 Patrol GQ
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I would have 2 look at the manual as I don't know much about the aircon system, but looking at mine, it is meant 2 be an open plug that lets water condensation out.
Looks like you nailed it with the first photo Todd, it's the air conditioner drain. Look at the black trim clip beside the drain, it's in the same position in Greg's photo.