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Discussion Starter #1
Read a dozen or so threads and seem to have found some answers, but want more opinions.

I have my OBD II connector and the others that look like maybe communication related?


One looks like the AIC connection which is usually under steering wheel but is on under dash on transmission hump.









This is a former Military truck, so I feel the grey plugs are communication related but unsure.

Last, what is this? Under dash-passenger side of transmission hump





Thanks.
 

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Top image is of On Board Diagnostic Plug
Next 2 are for the optional Auxiliary Idle Control Module (I believe)
Next underdash images are for optional trailer brake control module.

Last two images are for passenger seat ejector module. Under the steering wheel you’ll find a red toggle switch, if activated it will eject passenger seat contents...... ‘K ok just joshing.... not noticed that on mine, hmmm it looks like something to do with vacuum system for heater controls.
j
 

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I think JCart nailed it. The shiny silver metal doohickey should be the vacuum actuator for the deferost/ floor door, if memory serves me, but my memory isn't exactly trustworthy all the time. Some form of heater/a/c control.

Sent from my E6810 using Tapatalk
 
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