5V Power Source

[Big Q]

Looking to add some sensors to my car, is there a already accessible 5v power source somewhere to tap into or do I need to reduce it down somehow?

Update - should try reading the instructions first before posting here on my aem aq1 datalogger as it steps down voltage to 5v to supply the sensors with power.

 

[jn2]

What sensor are you trying to add? I can't think of anywhere you will get a 5v source from, but most gauges that come with sensors work off 12v bc of this.

 

[oldbones]

The pcm uses a 5v system for the tps and other sensors such as the crank sensor. All the analog sensor use a 5v reference, i think. What are you adding? At some point I'm going to use a uno arduino with a transducer to moniter fuel pressure. Or start toying with raspbary pi3 for datalogging and interfacing.