Other than the country where the relay is made Could there be another reason why two AC relays have failed on my car in 5 years? Same scenario both times. Turn on AC, compressor doesn't engage. hit a few bumps in the road and CLICK, it's on. Last time it happened, I replaced both the AC and fuel pump relays thinking that since they were both orig., I wanted to prevent a potential no-start. But here I am again. Turn on AC and occasionally have to tap the relay.

The diode on the compressor connector is bad.

It keeps the relay contacts from pitting.

http://www.progeny.co.uk/Back-EMF-Suppression.aspx

Woah, thank you..I had no idea! That's actually an interesting article. So now the question is, do I just go to RadioShack for a diode and splice it in, or does Delco still sell the pigtail?

Radio Shack sells diodes also.

http://www.radioshack.com/p...sp?productId=2036270

If you do use the Radio Shack diode make sure the band on the diode connects to the Dk. Green wire. The end of the diode without the band connects to the Black wire.

[This message has been edited by phonedawgz (edited 09-23-2014).]