Dual Plasma LEDs
Doug,
I just finished wiring those lights for my RV8. They are low voltage (5V) polarity sensitive and under normal conditions you will not see lights. Both systems on; no lights, both systems off; no lights. When one system is on and the other is off you would want the led illuminated next to the off system indicating a fault. You should see these lights come one when you are running up and checking each system by disabling one with your switch, its light should come on indicating a fault. The red led wire is positive and the yellow is negative. You can actually verify the light functions with 2 D cell batteries. Connect the red lead to the positive and yellow to negative, light on. Reverse the leads and no light. I have labeled my #1 system as left and my #2 system as right. The connector pin 14 from Unit 1 (left) goes to the red lead of the right light AND the yellow lead for the Left light. Connector pin 14 from unit 2 goes to the red lead of the left light And the yellow lead of the right light. I mounted the lights next to the respective ignition toggle switch held the leads (Red from one, yellow from the other) and alternated the polarity on two D cell batteries to confirm the lights came on as indicated. I do not have power on my aircraft electrical system yet so I can not verify with aircraft power but looks like it will work as indicated.
Long explanation, hope it did not confuse you. I studied the wiring for a while to get it right in my head.
