unless you got aftermarket bars, there's a weight in there you ain't getting out.  So no internal wiring.

Ok, 1st hurdle cleanly leaped.
Next, take off the throttle grip, and compare with the picture.
2 screws on the control and split it.  You don't have to take it completely apart, but spread it enough to take a look at how the cable attaches.  You'll see that one side of where the cable attaches is longer.  That's a stop.  These don't have that.

I think they're for dual cable harley's