I have a question on the correct diode to use. You say a 3 amp 50PIV (RS part number 276-1141), a rectifier diode or a 12V Zener Diode 276-0563 (IN4742A)? Does it make scents that you could have more than 12V ? :thinking:^ thanks John! :thumb:
a little more info on the above circuit- keep in mind that your offroad lights will always be on when in reverse.
Radio shack has 3 amp diodes for $1.99 each
The reverse wire on a jk should be the white wire with gray stripe at one of the tail lights.
here's a pic to show the circuit diagram compared to how a diode looks.
A diode blocks current one way, but allows it flow the other direction, so you don't get one circuit feeding back into another.
View attachment 94565