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Cruiser, I found the vacuum diaghram, thank you again for the assistance.

Cruiser 54, Thank you for the reply, I have your tutorial, as a matter of fact I purchased the upgraded power and ground kit from "kellyswip" as referenced. Very nice kit and Kelly is extremely helpful and knowledgeable. Tips 1-5 have been performed, 27 is on the list. If the relays and vacuum ports are not original, please advise of the schematic that will show the correct ac/heater vacuum routing?

Hello, Recently purchased an 87 4.0 4WD 5speed. Unknowingly the truck has some wiring issues, which I am finding out is quite common. I have the service manuals for both an 87 and 88 however I cannot find the connections for the attached items. Please help identify the correct wiring for the 2 relays and 2 vacuum ports. Better yet are these items factory and do they belong? Also the schematic shows that a green wire with trace should attach to one of the terminals on the evaporator switch, any idea of where the green wire w trace originates?

Rear speaker brackets