I've teared apart the back fender here for the sole purpose of fitting these:
Set Of 4 Black CNC Machined Billet Alum Custom Integrated Front & Rear Turn Signals - MAX-INC AUSTRALIA
And the thought had from the start been to mount them at the rear mounting point of the bolts on the fender.
However, the brackets on the bike, and the structural part of the fender, combined they both build 2,2 cm/ 0,86 inch. So to mount the indicators with a nut, you'd need minimum 3 cm/1.18 inch rod on them to be able to pass through it all, and to be able to fasten it with a nut. It's the bare minimum.
So sadly, my indicators only have a 2 cm rod on them. The thread on them though did screw into the nut for the fender bolt. I'm gonna try for fun to screw them in and see how they line up. I'm not expecting them to be pointing the right way thou when tightened...
So I'll be mounting them to the back of the brackets instead, which actually is beneficial for four reasons actually:
1 - It saves me a lot of hassle to get it to work by using the rear mounting hole for the fender.
2 - It makes the wiring way easier, as it becomes more "plug and play" kinda set up.
3 - You're able to remove the back fender itself without having to remove the indicator/wires
4 - The ease and fact that it's smooth sailing to mount the indicators on the bracket. At the very back of them, on the inside of them, there is a "dimple" inwards, where it's more than enough place for the rod and a nut.
I'm still curious as heck to as how others have managed to use the rear fender bolt to mount indicators! It's bothering me a little. The only way possible ways I see are either: They have after marked indicators with long enough rod/bolt to make it through the whole piece with thread to screw a nut onto. Or, they have actually screwed them into the original threads and luckily? managed to have them point the right way? I dunno, I don't get it...
Will hopefully be able to get the indicators up and running tomorrow, so I'll keep you posted on the progress!