[Ether]

If you're still out of ideas and want to try something, you could take two pieces of 22 gauge solid copper wire (with the ends suitable stripped) and attach them to the signal and ground of your PWM cable. Then carefully plug each copper wire into the signal and ground of the Victor's PWM input port (so you can see what you're doing and inspect it with a good light and magnifier)... and see if the blinking orange goes away.