What are these for?

[Jake the Peg]

So I developed a sizeable leak from my steering box yesterday, leaking from the top adjuster / locknut. I’ve fitted an o-ring & fibre washer below the original washer seal and it’s dry now, I’ll look into getting the correct seal. I found two connectors on the wiring loom coming from the bulkhead, and a missing wire going to the airbox. Can anyone tell me where these should be plugged into?
thanks

 

[chapel gate]

is there a tube going into the airbox? aus and middle east countries had a "air filter needs changing" dash warning light.

the pressure drop sensor was attached to the side of the airbox. although, that doesnt look like it, its white plastic iirc.

 

[Iwan]

On a 12v it's the vac solenoid for the turbo lights.. I don't have an original 24 valve but I do love having a 24v in my 81..

 

[Towpack]

The blue and brown plugs look like the connectors for the EGR valves on the 24v engine.

 

[Jake the Peg]

Thanks TP, exactly what they are! I’ll hide them now

 

[Jake the Peg]

On a 12v it's the vac solenoid for the turbo lights.. I don't have an original 24 valve but I do love having a 24v in my 81..

Thanks Iwan, I think my truck had a cone filter fitted when PO bought it, so I can’t understand why it also had a snorkel?? I’m sure the airbox is from his old 12v. Something else to tidy up