How to replace headphone Jack.

Ive seen a similar problem that wasnt the case with my nano at this link to this site.

How do I replace my head phone jack?

I ordered a new headphone jack from apple that appears to also have the on/off or hold switch on the other end. There is a brown sort of wiring that connect the two (headphone jack and what looks to be the on/off or hold switch) that goes at the top left when your facing the unit. I Was just wondering after I completely remove the Logic Board will it be somewhat self explanitory to install the headphone jack? I have also read that the headphone jack is integrated into the logic board but the boards are like $100+ to replace. Is there a work around or is it time to toss my old nano? Thanks in advance and I couldn't find a definite answer on here.