I used the same type of lights , but kept the original configuration of two brake , two turn, and two reverse lights . I did this after running the convertor for two years , I hated the fact that the 4-way flashers didn't show up correctly on the rear . They will not flash when you are on the brakes at all . So, when the new bumper was built , I went ahead and cut in 6 oval holes for the new grommet lights , love it and won't go back either . I did keep the convertor back there for the trailer hitch and set it up accordingly , works just fine .
Sarge