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I recently purchased a 2019 Honda Insight EX which i'm super excited about. Only issue? I cannot, for the life of me find any information on the installation of a ham radio. For those of you unfamiliar- think audio amplifier for an idea. Specifically i'm looking to install a Yaesu FT8900r, which is normally powered with 13.8VDC +/- 15% and idles at 0.5A draw and up to 8.5A transmitting. It's often not recommended to go through existing factory wiring but i'm not sure where else to turn. In a perfect scenario i'd mount direct to the 12v battery to reduce alternator whine but I'm not seeing any route to do that either. I considered an additional battery to power the radio but i'm not sure how I could safely recharge that battery if installed. Does anyone have any guidance/recommendation on how I should go about this?
 

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Fuse tap off an existing 15A circuit? 8.5A isn't that much of a load. The 12V plug already available should be able to handle 15A.
 

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My only concern with a fuse tap is where to ground? You typically want to use the same ground as the battery to avoid a loop for alternator whine.
 

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Not sure if this helps the situation (?), but the Insight doesn't have an alternator. The HV battery recharges the 12V battery via DC-to-DC converter. - https://www.gen3insight.com/forum/5256-post26.html

As an idea for battery mounting, perhaps you could reapply this idea for standalone battery for a 'front remote camera.' @Min Pin shared install pictures and planned to recharge every 2 weeks - https://www.gen3insight.com/forum/564-2019-honda-insight-accessories-add-ons/2086-front-remote-camera-cure-parking-anxiety.html

Also, our setup for the Insight is a bit different from the Civic, but found this Civic thread that discussed putting 12V power in the trunk for ham radio - https://www.civicx.com/threads/12v-power-in-the-trunk.3158/
 
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