Cigarette Ligher Install

[Rat72]

I have what looks like a new cigarette lighter but the last owner did not complete the wiring. There is a red wire that I assume goes to the lighter socket on the fuse panel. The blue wire has a male circular plug that is unclear where it should go. My guess would be that it needs to be changed to a female blade plug and put into the lamp blade on the fuse panel. And then there is a male blade coming off of the lighter with no wire. Is this a ground and if so where is the stock grounding location?

Thanks,
Whit