CaptMoto, i would respectfully disagree with you, since as Stoic pointed out this connector is capped, so it couldn't have been previously connected to anything. Besides, the popping is there so the system works. Speaking of, i get a noise similar to someone hitting a waxed linoleum floor with a hard rubber sole, or to a high-pitched cough, together with the normal popping, awful to hear. Stoic, I'll do as you suggest, just secure and forget about it.Maybe it's for the ABS, who knows. Apart from these little things, I love it.