Solved Replacement hotend installation

Hello,

I got a new hotend replacement and i just wanted to know if it matters which plugs i insert the 2 connections.

It's heating up but is smoking a little bit. I imagine its from the oil when making them but i just want to make sure before i do a test print.

Thanks all.

PS. Do i need to install the rubber thing from the old one? The heads look a bit different and i dont think it will fit.

I have an R1+