This alarm is installed in my 87 300DT. Alarm part # is 126 820 008 26

Ok folks, did the obligatory searches and people have generally said "just disable the alarm by unplugging it". I'm a bit leery of pulling anything that has 3 harnesses going into it. My concern of course is pulling something that is critical to the operation of the vehicle.

Does anyone have first hand knowledge of which ones to pull? i've labeled them all, 1 through 3: