Having trouble with this on CPI Hussar. Measured wires to device on carb and no power. Traced the + wire to device with aluminium fins mounted under front panel. No experience with these things. How does this regulate amount of choke? And, can I retrofit a switch and 12v to carb and control choke manually....getting harder to start...even with riched up fuel mixture. Or, remove solenoid from carb and fit manual arrangement there?