Intermitant charging issues? This little bugger could be the problem! Our replacement rear Alternator plug for the "DN" external regulated Delco Alternators can be a problem with charging. Corrosion, dirt & dust get in these connectors, and being at the rear of the Alternator with no protection can get full of corrosion and cause intermitant charging problems. If you're renewing your Alternator, don't forget to get a new plug to finish the job! Clean new connections are the way to fly so no charging issues arise.