My background is geared towards the automotive electrical side of things. I do have a fairly broad exposure and understanding of electronics as a whole.
I have a simple project that I can easily wire up with a standard 12v automotive relay. This issue is I am trying to scale down the physical size of the project. This version is going to be essentially all analog LEDs. I want to use some RGB 5050 LEDs ultimately. Ultimately I am looking at making/having made PCB’s for this project so physical size will be an issue.
The Project parts
3 RED LEDS plus resistors
1 SPDT Rocker Switch
Two 12v power sources (Voltage fluctuation range 12v-14.4v) - both are switched power
1 = Main, 1 = Aux
One ground source
12V Relay
I have attached a diagram (hopefully)
This will be a low amp circuit. I need a relay substitute to control power to one LED. The other two led’s will be powered from the switch in their respective positions. This will be supplied from the load side of the switch
The third LED will only be powered when a switched 12v aux source is activated.
The first two LED’s will be powered via the position on the SPDT rocker switch.
I need a relay substitute in place to turn off the third led while powered by the AUX source and I flip the switch into one of the ON positions – also lighting the corresponding led.
What substitute can I use?
This diagram is missing 2 diodes separating and preventing power to back feed to the other LED powered by the switch
