I don't have a 69 under the eyes at the moment, but looking at the parts book, looks like the feed is like later Sportsters, taken directly on the back of the timing cover cavity.
Then one steel pipe goes on top of the gear box right fin that holds the sprocket cover where another fitting is bolted, fitted with the needle screw regulator. Then short piece of steel fiting and rubber hose after that...
You might well be missing the middle fitting, it's normally quite visible , easy access for adjustments.
Oh Lord, give me patience, and GIVE IT TO ME NOW!
thanks patrick, that puts me on a path. my buddy is also lending me a "shop" manual this week, maybe i'll get a better sence of tracking it down.