Drawing power from battery at idle
#21
07-10-2021 | 05:56 PM
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Joined: Nov 2019
Posts: 67
From: Fl
You DO NOT connect any accessory directly on the alternator battery lead of a ECU/ECM alternator output controlled charging system.
Even the starter factory is first supplied directly from the battery and a piggyback lead to the alternator.
Your ECU in the MAZDA can not effectively adjust the charging rate of your alternator..... so I am not sure if you would damage your Alternator ,ECU or battery maybe all 3? There are some thing electrical you just don't cheat on!
Even the starter factory is first supplied directly from the battery and a piggyback lead to the alternator.
Your ECU in the MAZDA can not effectively adjust the charging rate of your alternator..... so I am not sure if you would damage your Alternator ,ECU or battery maybe all 3? There are some thing electrical you just don't cheat on!
#22
07-10-2021 | 06:19 PM
Senior Member
Joined: Oct 2018
Posts: 6,473
From: Northern California
When you add none factory electronics you either piggy back an existing circuit after you verify it will support the additional load (must test for both heat using a digital temperature gauge and also the ohms with all the devices at maximum demand) or you connect directly to the batter(always a better choice).
Last edited by Callisto; 07-10-2021 at 06:21 PM.
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