What engine do you have? the ESM has a couple listed in harness layout

V-6
E3 Triple Pressure Switch
E4 Horn
E68 Ambient Air Temp switch
E69 cooling fan motor

I-4
E3 Dual Pressure Switch
E4 Horn

I don't see anything else. Are you sure everything is plugged in and working?
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Joe
We don't need no stinking manuals, thats what we have Emergency Rooms for!