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88 Cherokee AC wiring. Non AC to AC

AIbandit

NAXJA Forum User
NAXJA Member
Location
Chico, CA
I need the wire colors for an 88 cherokee for the compressor and pressure switch.
I couldn't find them on the diagram
A non AC jeep would still have it in the harness right?
I'm thinking I might swap the entire 89 harness into the 88.

Edit: I think I have it

LT grn Black (from AC control)
To AC low pressure switch on drier
Turns LG
LG to AC clutch relay
LG to ECM
LG to Tstat switch


AC clutch Relay Orange
TO
AC Compressor
To Diagnostic connector 2
TO AC FAN DIODE
turns ORange/Black
TO Fan
 
Last edited:
Does it matter if my ECU gets that AC on signal?
 
The ac on signal tells the ecm to idle up the engine during compressor operation. IIRC.
 
The ac on signal tells the ecm to idle up the engine during compressor operation. IIRC.

That's what I figured, I'd imagine the ECU still has the input for it so I'll try hooking it up.
If not I'll just take the whole 89 harness.
 
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