It's done. I first connected the 300 Ohm resistor with a 4.7 k potentiometer and tested it.
I believe that with that small turn and a little gas, my rear passenger won't forget my license plate anytime soon, if he saw it

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You can definitely tell that it's a truck with a powerful engine. It really just depends on how much you press the accelerator.
"Can someone send me a simple wiring diagram for the anti-parallel diode configuration? The car is idling a bit rough with a 300 Ohm resistance."
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