2018 RAM 1500 connectors/parts identification

[distram1500]

Good morning! Hope you could help me identify couple of things that I found under the hood while upgrading headlight bulbs.

(I have googled for a bit to see if I can find out myself, but haven't gotten any good results)

1. There is one connector that looks like a standard NA 110v three prong connector
2. Two node connetor with L-shaped nodes
3. Some sort of sensor with red plastic part

Thank you!

 

[distram1500]

1. Turns out to be a block heater connection.
Let's see if I can figure out second one