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I'd question if they'd be any efficiency benefit to turning off the rear. The power draw is so small for the rear light compared to front.
The safety benefit of the rear being on seems to outweigh the additional equipment and failure more of having a switch purely for the rear.
Absolutely. Most of the rear lights draw around 30mA.
Alexnharvey
Yemble
I'd question if they'd be any efficiency benefit to turning off the rear. The power draw is so small for the rear light compared to front.
The safety benefit of the rear being on seems to outweigh the additional equipment and failure mode of having a switch purely for the rear.
You could always unplug a spade if looking to be rear facing incognito.