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The high pressure (suction) line you're looking for is here:


It also looks like you're missing the Dual Pressure Switch and Pressure Switch B that attach to the Receiver/Drier. I don't know if Honda might have changed the pressure switch design in 1989.

From 1987 service manual:


Art Font Parallel Slope Drawing


I don't know where you can find these switch(es). They're discontinued from Honda. A wrecking yard might be your only alternative.
 

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Ah...you need the hard line. I would check a local AC shop and see if they can help you. They should be able to fab up a hard line for you.
 

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Decided to do a r134 conversion to it. Issue I’m running into now, is trying to continue using the old fittings coming out of the firewall, but not such luck finder an adapter . I guess these 89s are a part nightmare...
It's part of the adventure of owning a +30 year old car.
 
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