Power to a fish finder

I have ran a dedicated power line to my Garmin UHD 93SV from my crank battery trying to get a stronger cleaner signal. Will that do it?

Sent from my SM-G975U using Crappie.com Fishing mobile app

Dedicated power circuit to any device allows steady and ample power that devices need to function efficiently ...

Also important is adequate wire size over the entire run to minimize power loss - longer run = heavier wire ...
Part 1: Choosing the Correct Wire Size for a DC Circuit - Blue Sea Systems

Gremlins arise with low power - usually in charting or GPS before other anomolies ...

Rickie

I would also want it routed away from the trolling motor wiring to reduce the chance of picking up interference