So I solved my issue and it might help someone else. I learned that not all cigarette plugs utilize the same amperage. When I went to find a replacement, I noticed that the typical plug is rated for only six amps. So, I went to Amazon and found a more robust plug, rated at 15 amps, it has two fuses — one in the plug and the other an in-line fuse. Now all is well. Rookie mistake, lesson learned .