Sorry I do not know which is which. do not have the schematic to look it up.

#1 should be ground. Don't assume you have it make sure with a meter.

On the other two one should be battery voltage and the other the reduced voltage.

Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.