1970 Swinger cigarette lighter location

All 1970 Dart and Duster 340 cars came with the bezel mounted lighter, however, I don't think any came with an extra lighter mounted in the ashtray. It's possible a dealer or a PO installed one since there is a hole for one. If a second lighter was an option there would probably be a second plug for one in the wiring harness and I don't remember seeing one when I had the dash apart.