Get 2 diffent colour leds(you can get single bulb but 3 colours) and wire to each power source, depending on the colour will mean which battery is powering it
Thanks Phill, great idea re multicolour. Will investigate. Can I just check though that a single colour LED would literally just be wired to the same switch terminal as the leisure feed (rather than the feed coming via the LED if you see what I...
Morning all! Just about to hardwire a dashcam in, and for flexibility I want to be able to change its power source between a switched live on my main battery and a permanent live on my leisure battery. Easily achieved by wiring in an SPDT on-on...