I very seldom use the servo limiting brackets. I just make absolutely sure that the servo travel doesn't get close to the point where it could go over center, even with substantial force on the bracket by hand. The servos should not travel past 120 degrees total rotation with a normal arm (no capstan or linear actuator). That leaves at least 30 degrees from center on both ends.
As for the wires, I just tie them out of the way so the moving control parts can't get close to them. I never use molex. I much prefer D-sub, but that is personal preference.
Jesse Saint (Saint Aviation, Inc. - VAF Advertiser)
RV Hotel (hangar, room, car) at X35 in north FL
Commercial ASEL/S A&P/IA EAA Technical Counselor
Dynamic Prop Balancing, Prebuy Inspections, Condition Inspections, Repairs and Mods, Injector Tuning, Airframe, Engine, Panel Upgrades, Ferrying, etc.