Ok as I read your post it's all coming back to me now. I apologize it's been well over a year since I did this. But don't worry I'm fixun to give you the complete lowdown.

Yes, HD does not mention a lot of things. I went thru the same stuff you are and had to search all this stuff down back then but I had forgotten it.

Originally the "only" reason the sig relo kit was sold was as an "additional" kit to the saddlebag bracket kit. HD never envisioned that someone might want to just buy the relo kit by itself or inadvertently buy it first instead of after the saddlebag bracket kit.

So to make a long story short, you've probably noticed that the old relo fender backet bolt is smaller and more puny lookin than the forward bracket bolt. Well it's not recommended for mounting bags. To do that you need a stiffer bolt and to screw that larger bolt in you need interior fender bracket inserts that have the larger theads in them.

I had to buy this kit but had forgotten about it. " It " has the cosmetic hole cover included in this kit.

It's called the rigid sideplate mounting kit. They have the threads in them that holds heavier rear saddlebag rated attachment bolts.

It's HD part #53975-06 comes with the plug, better brackets for bags and hardware.

I've attached the HD PDF file of it. (edit the PDF must be too large it won't attach, let me see if I can find a link online so you can view what you would be getting)

This can be bought locally or at 53975-06 | New Castle Harley-Davidson

I bought the above and it's a better application for bags.
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If you think you don't need the heavier saddlebag bracket kit, you can buy only the hole plug. It's HD Part #56239-93
can be bought locally OR online at,

HOLE PLUG, 56239-93, HOLE PLUG

for a couple of bucks and shipping.

Mark don't try to hold the sig placement too much with the one nut, it's only for snugging, the second locking nut is the one that "holds" it all in place. The trick is getting the sig alignment while trying to tighten it.

If your foobarred sig ever fails on you, you can buy a new one relatively inexpensive. I could find the part number and current price for you if you don't have it. They come as a complete unit with bulb socket, wires etc all together.

RWB,
That part number would be great . . . I can't find it on the H-D site . . . . . . The metal on the sig seems a bit soft . . . Mark - Thanks!

Yes the sig metal is pot aluminum. I think I put a lock washer on mine to help lock it but I really can't remember for sure.

Ouch the rear is a bit more. I was remembering the front one was in the low $20s last time I checked (over a year ago). Anyhow here are the prices and part number. You might could just put some JB Weld on the sig threads, let it dry a day or so and then run a tap thru it. Might work, the JB Weld is about as strong as the sig metal.

REAR TURN SIGNAL, HD Part #68978-00
$52.49 at Ronnies Harley
$38.28 at New Castle HD

Harley-Davidson | New Castle Harley-Davidson

If you do order one, contact them first to verify that part number will work on "your" bike. I was going on a 2011 FXDC but when it came up it only offered this one part number and it said " for international models only "

I get the following part numbers for domestic models for the rear turn signal lamp 68977-00 and 68461-09
But i do not know which of those would be correct


Brian

There is no substitute for experience
Brian