Gus -
The lighter was in the truck when I bought it 13 years ago. Don't know what kind. It's not original because there is no light bracket. Also, I believe that 6v lighters were a little larger diam than 12v. My truck has been converted to 12v. I just use it for my phone.
It does have the correct knob according to Jim Carter.
> Cigarette lighter knobDon't know why I didn't hook up the ground lug while I was rewiring it. Works fine without it. Must be some bare spots on the dash where it attaches.
- Lonnie