A noob question on electrical circuits and polarity

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Charlie Whiskey   1 mW

1 mW
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Joined: Jun 28 2020 9:50am

A noob question on electrical circuits and polarity

Post by Charlie Whiskey » May 04 2021 9:13am

Context is I'm trying to rig up a relay for my TSDZ2 motor system to power a front light, and I realised how basic my understanding of electrical circuits is so please bear with me... :wink:

1. If you're connecting two batteries in series you connect the +ve of one cell to the -ve of the other.
2. but if you're connecting a consumer device (say an LED, or anything with a red and black wire) the convention is the other way around and that the +ve of the consumer device is connected to the +ve of the battery is that right?!

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