Brewtoo mentions the bimetallic corrosion. It also could be the fact that these two metals expand and contract at different rates, eventually resulting in separation.

Either way, the failure rate has nothing to do with condensation, OR R12 flow.

The X11/4 connector is on the barrier that separates the engine compartment from the battery compartment. To learn more information about this, look for my thread asking if there is a substitute for the impulse counter. Just search the Tech Help Forum, Titles Only, for Impulse Counter.

I built an LED counter today. You will find a schematic for it in one of the threads or links in the above thread. The climate control computer stores trouble codes. The LED allows you to check for and draw these codes if any are present.

I wanted to make sure I had no other problems requiring any other parts to be replaced while I have the instrument panel off. Luckily everything was clean. I received my pod set today and I expect to start the project Saturday. We had our first 100 degree day and my shop is not air conditioned. I am going to sweat my you know what off doing this.

Good luck with yours. Have you removed the glove box and tested your vacuum pods yet?

Have a great day,