My 1966 Charger 361 has an oil pressure sender that you can just see in the bottom corner of this picture. I was going to order a replacement. Rock Auto shows that type of sender for an oil pressure warning light, and the large bell type for a gauge. It works fine most of the time but has cut out on me, particularly when the headlights are on for a long period. I would like to replace it. Which type is correct for the 1966 Charger with a gauge? Can't be sure if it was original or previously replaced.