I'm pretty sure these should be plugged in somewhere.....

[Allstarsrd12]

So I wanted to look into my little possessed gas gauge problem, and took a look under the back seat. Figured something may be loose.
Saw these two little buggers, and judging by common sense, I'm pretty sure by the looks of them that they should be plugged in. Most likely they should be plugged into the little part next to one of them. However, I don't know why they are taped down, with the end parts plugged into the thin (and apparently quite dirty) air under my back seat...