Well, my Sunday funday in the garage has come to a halt. I was working on the scoot and one of the jobs I was trying to get done was installing the Harley GDO. I had this on my '12 RG and removed it for future use. Today is now the future. It worked fine on that bike and was removed almost 2 yrs ago when I got the '15. Today I took it off the shelf and installed it and it no worky. Anyone else install one of these older model GDO's on a newer Rushmore? The instruction sheet has been updated many times and I am using the newest one. Mine is the 4 wire version which is Black, Yellow, White and Orange/White. Black and Orange/White are the -/+. White is the brights (Blue/White). Yellow does not get mentioned for the newer vehicles. On the original instructions +/- are the same, Yellow to Yellow and White to White of the headlight harness. Anyone conquer one of these same installs successfully. I searched the forum and found leads, but nobody that prevailed. I had to step back and jam some tunes on the new Hertz speakers which has led me to my forum peeps. Thanks all!