Salt & Pepper Anyone?

I've been scouring the rough/hunting idle threads for a while now and one thing that I havent tried yet is checking out the harness for the Salt & Pepper shakers. People say that a faulty connection could cause the idle problems, my question is; is there a way to tell the shakers are bad? Volt Meter? What should the tollerance be? A few months after I got the car I did one of those 'low pressure' wash downs of the engine bay at a coin op place. After I did that all my interior lights wouldnt shut off (i.e. hatch light, vanity lights, dome lights) In stead of dealing with the problem I just pulled all the bulbs...I know I know. Now that I look back (its hard to remember when it started now) my rough idle/hunting idle problems started around that time? I dont want to just start dumping cash into parts I dont need to replace so if someone could throw me a bone that would be awesome

Yeah I saw the diagram for the 10-pin. I was just wondering what voltage each pin SHOULD read. Or if its even necessary the check such a thing. First things first I guess, check for corrosion. Real quick with the interior lights. Shouldnt they have turned back off after all the moisture evaporated? To this day I have to keep the bulbs out or it drains the battery.