This is what my valve housing looks like. Can see what seems to be a piston and perhaps an actuation rod in the other hole.
Also it dawned on me that I may have been using too small a resistor. I just upped them to two 22ohm 5watt resistors in parallel each end. This gives me 11 ohm at 10 watt each cap. Sofar no codes.
I think the previous resistors may have blown
I did put a dc clamp meter on one of the wires before the plug but failed to get any readings when someone toggled throug