I'm getting ready to do some testing and fixing in the electrical side of the car. I used a Dremel tool with a scotch bright pad attachment. It made pretty short work of the job.

Here is the before pic.

Use DeOxit on it to protect it from corrosion longer.

This is the before pic.

any suggestions for cleaning the contacts other than mechanical abrasion like the scotchbrite? something like acetic acid that cleans the contacts easily and quickly?

EDIT...nevermind, looks like that product also cleans the corrosion

when I was a kid we used a pencil eraser to clean electrical bits.

I dig the mass effect cleaner though

I soaked mine in apple cider vinegar. Then neutralized with baking soda. Came out looking like new.
The trick is to get a second panel, clean it, and then move the wires over one by one. Makes it a 5-10 minute job. Clean your old panel and keep it as a spare or sell it.

I use just plain old white vinegar.

How do you clean all the wire lead connectors?

I'm repopping this thread to the top because I am working on this project today and was hoping someone has a good rapid response to my question. Even if I remove and soak/clean the wire connection male spades, what's a good way to clean the female connector ends of all the wires? Can't soak them in vinegar, and it's hard to get inside each connector, any good ideas?

See post #1. OP cleaned the female connectors with the method he described. A little wire wheel on the Dremel would work too.

or a toothbrush soaked in acetic acid/vinegar

I've used a small soda blast gun before with great results. Not so ideal for items still in the car

http://www.aircooledtech.com/tools-on-the-...p/soda_blaster/

See post #3 above.