I have a 1970 Mercury Cougar with a 351 Cleveland. A few weeks ago I started noticing the engine would occasionaly cut out while driving and occasionaly I couldn't start the car without wiggling the original double ground cable which was extremely corroded. As a result, I ordered a new cable and installed it last week. My problem is that I'm still having the same problems. I'll be driving along and the alternator light will flash on and off in cordination with the engine cutting out. Additionally I still have to occasionally wiggle the ground cable to start the engine as well. The double ground cable is a single cable running from the battery post to the back of the alternator and then down to the block. Sorry for the lengthy post but any advice would be appreciated. Is it the cable or is my alternator going out. Thanks.