Yes, it will run without the VOES. It will run a lot better with it though. Most drill and tap a hole in manifold and thread a barbed fitting to attach the hose to the voes switch. There is a write-up with pictures from ironmick about this.
The VOES adjusts the timing advance at wide open throttle (WOT). You will be much, much happier with it hooked up and operating correctly. Trust me.....
1986 XLH 1100 (fixer-upper) // Engineers design things, Technicians make them work. --- 30% of being mechanical is confidence/30% is knowing to go slow when needed/30% is looking repeatedly at what you have/10% is dumb luck .