This was a recent B744 sim exercise for us.
On selecting the LOC/BAC approach from the FMC database, it auto-tuned the ILS with its front-course, which were shown on the nav-rad page.
LNAV and VNAV were used to fly an overlay approach.
On approach the ND showed the localiser in a reversed sense. i.e. you would have to disobey its indications in order to regain the centerline.
We used LNAV but the LOC/BAC localiser is the overriding information for the approach.