What is the small electrical unit screwed on to the side of my alternator? It's just a little rectangular thing screwed on to the alternator with a short wire coming out of it with a female spade terminal on the end which connects to a male terminal on the alternator.
Whatever it is looks like it has got hot and melted, is it something I could get off of any sierra alternator down the scrapyard or do I need a specific one? Also is there any way if testing it to see if it's ok? I'll be surprised if it's any good looking at the state of it!